A contact part, a relay

Abstract

The utility model discloses a contact part and relay, this contact part includes at least one switch module, this switch module includes at least two along the first direction arrangement's moving contact piece, and with each moving contact piece respectively corresponding at least two static contact piece, in switch module, each moving contact piece has the fixed end and the movable end along the second direction distribution, and the fixed end is opposite the static contact piece fixed of this moving contact piece, and the movable end is suitable for the direct action or swing in third direction opposite this moving contact piece's fixed end to with corresponding static contact piece close or disconnect, wherein, at least two in the first direction adjacent moving contact piece's movable end is opposite along the second direction, and the second direction is perpendicular with the first direction or each other has the angle of clamping, and the third direction is perpendicular with the first direction, the second direction all. Adopt above -mentioned technical scheme, can improve the problem that traditional relay contact part occupies big space.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically to a contact part and a relay. Background Technology

[0002] Relays in the prior art are generally used to receive excitations or signals from external circuits to control the on / off state of the external circuit or one of its branches. A relay generally includes a driving part, a pushing part, and a contact part. The driving part receives excitations or signals from the external circuit to drive the pushing part. The driving part generally includes a coil assembly and an armature assembly. The coil assembly drives the armature assembly to move between two positions based on different signals or excitations. The contact part generally includes a moving contact and a stationary contact. The pushing part is generally driven by the armature assembly and connected to the moving contact to push the moving contact to close with the stationary contact.

[0003] Traditional relays typically consist of only one switch in their contact section. This switch comprises a moving contact and a stationary contact, which work together to close and open the corresponding circuit. In some cases, however, the relay contact section requires multiple switches, such as single-pole double-throw (SPDT) or double-pole double-throw (DPDT) structures. In such cases, the multiple switches in the relay contact section are usually installed side-by-side within the relay. The moving contacts are arranged side-by-side in one direction, and the corresponding stationary contacts are also arranged side-by-side in the same direction. A actuator connected to all the moving contacts of these switches closes and opens them. However, this side-by-side arrangement occupies a significant amount of space, hindering relay miniaturization and limiting its application in confined spaces, thus restricting the relay's range of applications. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background art and provide a contact part and a relay that can improve the problem of the large space occupied by the contact part of the traditional relay.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A contact portion for a relay includes at least one switching module, the switching module including at least two moving contacts arranged along a first direction and at least two stationary contacts corresponding to each moving contact; in the switching module, each of the moving contacts has a fixed end and a movable end distributed along a second direction, the fixed end being fixed relative to the corresponding stationary contact, and the movable end being adapted to move linearly or swing relative to the fixed end of the moving contact in a third direction to close or open with the corresponding stationary contact; wherein the movable ends of at least two adjacent moving contacts in the first direction are oriented in opposite directions along the second direction; the second direction is perpendicular to the first direction or forms an angle with each other, and the third direction is perpendicular to both the first and second directions.

[0007] Because adjacent moving contacts in the switch module are arranged along the first direction, and the moving ends of adjacent moving contacts face opposite directions along the second direction, the space occupied by the switch module is reduced, which is beneficial for the miniaturization of the relay and its application in confined environments. Specifically, the moving ends of adjacent moving contacts face opposite directions. That is, when two adjacent moving contacts are arranged side by side along the first direction, the moving ends of these two moving contacts are not located at the same end in the second direction. Instead, one moving end is located at one end of the second direction, and the other moving end is located at the other end of the second direction. The advantage of this layout is that it fully considers the structural and motion characteristics of the moving contact. The moving end of the moving contact needs to have a larger space for movement because it needs to be driven by the pushing component. At the same time, due to this staggered arrangement, the moving ends of adjacent moving contacts are opposite the non-moving end area of ​​the adjacent moving contact along the first direction. The space of the non-moving end area is relatively large. Since there is no need to consider the avoidance problem between the moving ends of adjacent moving contacts or the corresponding pushing components along the first direction, the adjacent moving contacts can be arranged more closely side by side, thereby reducing the space occupied by multiple side-by-side switches in the first direction and achieving a more compact structural layout. Furthermore, the moving and stationary contacts in this switch module utilize three dimensions of space to rationally allocate layout and movement space. The first direction is used to arrange the moving contacts, allowing each moving contact to obtain a larger current-carrying area without occupying too much space inside the relay. The second direction is used to allow the moving contacts to extend, ensuring that the wiring terminals of the stationary and moving contacts in each switch have sufficient spatial distance, avoiding problems such as electrical insulation failure, local overheating, and accelerated aging of plastic parts. The third direction provides a large movement space for the moving contacts, which can better meet the contact requirements of large contact gaps.

[0008] In at least one embodiment, the switch module has at least one first switch group consisting of two switches, each switch including the moving contact and the stationary contact; in the first switch group, each switch shares a moving contact and the shared moving contact forms a common moving contact, and the stationary contacts of each switch are located on both sides of the common moving contact along a third direction.

[0009] Because the first switch group in the switch module forms at least two switches through a common moving contact, the number of independent moving contacts required to achieve double-throw functionality is directly reduced. This reduction in the number of moving contacts not only simplifies the overall internal mechanical structure of the switch and reduces the inter-component relationships, thereby improving the integration and operational reliability of the mechanical system, but also significantly reduces the design complexity of the drive section and the required installation space compared to driving two independent moving contacts in the same direction or along other more complex trajectories. In particular, it optimizes the space utilization efficiency in the moving contact movement direction, making the overall switch structure more compact. Furthermore, through the cooperation of this second switch group with other switches, more complex electrical path switching can be achieved, such as implementing a series-two-parallel function, broadening the application range of this relay.

[0010] In at least one embodiment, in the first switch group, the common moving contact is adapted to be closed or both open with the stationary contacts on both sides of its direction of action.

[0011] Because the first switching group uses a common moving contact, three independent circuit states can be achieved through this common moving contact: forming a closed circuit with one of the stationary contacts located on either side of its operating path, or maintaining a predetermined electrical clearance with both stationary contacts and being in an open state. In addition to the traditional switching between the closed states of the two stationary contacts, the fully open state allows the relay to meet requirements such as safety isolation during circuit maintenance and independent and precise control of each battery cell during the pre-charging process of new energy vehicle batteries, significantly broadening the application range of this relay.

[0012] In at least one embodiment, the switch module has at least one second switch group consisting of a switch, wherein the moving contact in the second switch group is adjacent to the common moving contact in the first switch group along a first direction and the moving ends of the two are oriented in opposite directions along the second direction, and the stationary contact in the second switch group is electrically connected to at least one of the stationary contacts in the first switch group.

[0013] Since the moving contact in the second switch group is arranged adjacent to the common moving contact in the first switch group in the first direction and their moving ends face opposite directions in the second direction, and the stationary contact in the second switch group is internally electrically connected to the stationary contact of one of the switches in the first switch group, the integrated design of the internal electrical path and switch layout of the relay is realized. More complex switch logic combinations can be realized without significantly increasing the overall mechanical complexity of the switch or the number of external wirings. For example, it can flexibly form specific forms of series circuits, parallel circuits or selective switching circuits, providing the necessary hardware foundation for specific applications such as intelligent switching of battery pack series and parallel states.

[0014] In at least one embodiment, all moving contacts are linked to each other so that the contact portion has at least three contact states: a first contact state in which the common moving contact and the common stationary contact are closed in the first switch group and the moving contact and the common stationary contact are open in the second switch group; a second contact state in which the common moving contact and the stationary contact located on the other side of the common moving contact are closed in the first switch group and the moving contact and the common stationary contact are closed in the second switch group; and a third contact state in which all switches in the first switch group and the second switch group are open.

[0015] Since the closed states of the common moving contact and different stationary contacts in the first switch group in the second switch group correspond to the closed and open states of each switch in the second switch group, that is, when the common moving contact is closed with one side of the stationary contact, it corresponds to the closed state of each switch in the second switch group, and when the common moving contact is closed with the other side of the stationary contact, it corresponds to the open state of each switch in the second switch group, the selective switching of series and parallel circuits can be realized inside the relay through the correspondence between the switch states, providing the necessary hardware foundation for specific applications such as intelligent switching of series and parallel states of battery packs.

[0016] In at least one embodiment, in the switch module, in the first switch group and the second switch group adjacent to the moving contact, the two stationary contacts that have an electrical connection relationship are an integral structure and constitute a common stationary contact; the common stationary contact has a stationary contact portion corresponding to the two switches to which it belongs, and the stationary contact portion is provided with a stationary contact for cooperating with the moving contact on the moving contact.

[0017] Since at least one switch in the first switch group shares a common stationary contact with the switches in the second switch group, a single stationary contact serves two independent switch circuits simultaneously. This reduces the total number of required parts and improves space utilization, making the internal structure of the relay more compact. More complex circuit functions, such as dual-circuit parallel or series connections, can be achieved without significantly increasing the overall size of the relay. Furthermore, the integrated common stationary contact eliminates the additional assembly steps required to connect the two stationary contacts, while ensuring the relative positional accuracy between the two stationary contacts and effectively improving the current-carrying capacity of the common stationary contact.

[0018] In at least one embodiment, the closing directions of the switches corresponding to the two stationary contacts of the common stationary contact are opposite.

[0019] Since the common stationary contact has stationary contact parts with opposite closing directions for the two switches to which it belongs, it provides a basis for the series and parallel control of the first switch group and the second switch group. This allows the common moving contact and the moving contact in the second switch group to move in the same direction, so that one of them can be connected to the common stationary contact. The fact that the common moving contact and the moving contact in the second switch group can move in the same direction helps to simplify the structural design of the required drive part and further facilitates the miniaturization design of the relay.

[0020] In at least one embodiment, the two static contact portions of the common static contact member are a first contact portion and a second contact portion, and the first contact portion and the second contact portion are connected by a connecting portion; the first contact portion, the connecting portion and the second contact portion are arranged sequentially along a first direction, and the first contact portion and the second contact portion are arranged in a staggered manner in a second direction, and the connecting portion extends in the second direction; the second direction is perpendicular to the first direction.

[0021] Since the first and second contact parts of the common stationary contact are connected by a connecting part, and the three have a specific relative positional relationship and extension direction, the space inside the relay in the first and second directions can be effectively utilized, which is conducive to the miniaturization of the relay and improving the utilization rate of the internal space of the relay.

[0022] In at least one embodiment, the first contact portion and the second contact portion are arranged offset in a third direction, and the two are provided with the stationary contact point on opposite sides; the connecting portion extends in a third direction.

[0023] By utilizing the third-dimensional space to arrange the first contact, the connecting part, and the second contact, the conventional planar layout is transformed into a three-dimensional layout. This achieves effective utilization of the internal space of the relay in the third dimension, which is beneficial for realizing more complex functions without increasing the floor space and helps to miniaturize the overall structure of the relay.

[0024] In at least one embodiment, the first contact portion, the second contact portion, and the connecting portion are all sheet-like structures; the first contact portion and the second contact portion are perpendicular to the third direction; and the connecting portion is perpendicular to the first direction.

[0025] By designing the first contact portion, the second contact portion, and the connecting portion as sheet-like structures—meaning the common stationary contact is essentially a single component with a relatively small thickness—this shape constraint significantly reduces the space occupied by the common stationary contact while ensuring a high current-carrying area. Furthermore, the extension directions of the first contact portion, the second contact portion, and the connecting portion on the common stationary contact are defined. The extension structure of the connecting portion perpendicular to the first direction fully utilizes the space in the third direction, while the extension structures of the first and second contact portions perpendicular to the third direction ensure a good contact fit with the corresponding moving contact.

[0026] In at least one embodiment, a mounting base is further included; the fixed ends of each of the stationary contacts and each of the moving contacts are fixed to the mounting base; the mounting base is provided with a partition wall; the partition wall is located between adjacent first switch groups and second switch groups along a first direction.

[0027] The mounting base improves the accuracy of the relative positions of the stationary and moving contacts, enhancing their closing efficiency and accuracy. Furthermore, the partition wall on the mounting base between the first and second switch groups increases the creepage distance between them, effectively preventing short-circuit risks caused by arcing or electrical breakdown. This also allows for a more compact arrangement of the first and second switch groups along the first direction.

[0028] In at least one embodiment, the terminals of the stationary contacts in the first switch group and the second switch group for external wiring are led out to the mounting base in the same direction and exposed on the outer surface of the relay.

[0029] Since the terminals of each stationary contact in the first and second switch groups are led out in the same direction for external wiring, it avoids the need to bend each stationary contact in multiple directions, reduces copper loss, and allows each stationary contact to lead out its terminals with a larger surface area. In schemes with connection terminals, this increases the connection strength and connection area with the connection terminals, especially the welding area during soldering. This facilitates the electrical connection between the relay and the external circuit, reduces the design and manufacturing difficulty of the external circuit, and expands the application scenarios of the relay.

[0030] In at least one embodiment, the other stationary contact in the first switch group opposite to the common stationary contact is columnar, with one end of the stationary contact exposed in the mounting base along its extension direction and forming the terminal, and the other end exposed in the mounting base and provided with a stationary contact for cooperating with the moving contact on the moving contact.

[0031] By designing the stationary contact as a columnar shape, with one end directly exposed as a wiring terminal, the contact and wiring functions are integrated. This reduces the number of parts and intermediate connection links, simplifies the structure, and lowers contact resistance and failure risks caused by additional welding or connections. The columnar structure of the stationary contact itself also has high mechanical strength, providing strong resistance to impacts from the moving contact, ensuring its stability during injection molding and use.

[0032] In at least one embodiment, the second switch group further includes a stationary contact fixed to the mounting base, one end of which is connected to the second contact portion of the common stationary contact, and the other end protrudes from the mounting base to form the terminal.

[0033] Because of the presence of a stationary contact, the common stationary contact does not require a structure for leading out the wiring terminals. Therefore, the molding process of the common stationary contact is simpler, and it is also easier to integrate it with the mounting base by injection molding. Furthermore, by leading out the wiring terminals through an independent stationary contact, the electrical connection from the common moving contact to the external wiring can be guaranteed to be stable and reliable.

[0034] In at least one embodiment, the stationary contact and stationary contact head in the switch module are integrally molded with the mounting base, and the moving contact is fixed to the mounting base by a connector integrally molded with the mounting base.

[0035] Because the stationary contact and stationary head are injection molded integrally with the mounting base, their relative positions are more accurate, ensuring a stable electrical connection between them and improving the relay's current-carrying capacity. Simultaneously, the moving contact is fixed to the mounting base via a connector that is injection molded integrally with it. This connector can be pre-molded into the mounting base, allowing the moving contact to be assembled onto it later. This effectively reduces the complexity of the contact assembly and shortens the time required. Furthermore, since both the connector and stationary contact are injection molded integrally with the mounting base, their relative positions are more accurate. After the moving contact is assembled onto the connector, the relative positional relationship between the moving and stationary contacts is also more precise, resulting in a more stable switch-closed and open state and improved matching accuracy between them.

[0036] In at least one embodiment, in the switch module, the length directions of two adjacent movable contacts along the first direction are parallel, and the length direction of the movable contact is defined by the projection of the line connecting its fixed end and movable end onto a projection plane perpendicular to the third direction.

[0037] Since the length directions of two adjacent moving contacts are parallel along the first direction, a relatively regular layout of the contact portion is formed, which simplifies the design and manufacturing of the moving contacts and their related fixing and guiding structures, and also simplifies the pushing structure of the driving or pushing part on the moving contacts.

[0038] In at least one embodiment, at least one of the moving contacts is a flexible moving contact, the flexible moving contact including a fixed part, an actuating part and a flexible connecting part; the fixed part is fixed relative to the stationary contact corresponding to the moving contact and forms the fixed end of the moving contact, the actuating part is adapted to swing relative to the fixed part of the moving contact in a third direction and forms the movable end of the moving contact, and the flexible connecting part connects the fixed part and the actuating part and is adapted to bend.

[0039] Because the fixed part of the flexible moving contact is fixed relative to each stationary contact, it is easier to lead out the connection terminal. At the same time, compared with the traditional spring structure, the flexible moving contact can still ensure the flexible movement of the actuating part when the current carrying capacity needs to be increased and the volume is increased, without increasing the reaction force of the moving contact. This avoids the need to increase the driving force of the drive part, providing a basis for saving the volume of the drive part and reducing energy consumption. In addition, the flexible movement of the moving contact also helps to reduce the resistance of the moving contact and reduce the heat generation of the relay.

[0040] In at least one embodiment, the stationary contact of the stationary contact of the switch containing the flexible moving contact is tangentially positioned to face the swing trajectory of the actuating part.

[0041] In switches employing flexible moving contacts, the stationary contact is tangentially positioned to face the swing trajectory of the actuating part. This ensures ideal frontal contact between the moving and stationary contacts during contact, facilitating the formation of a larger and more uniform effective conductive area. Consequently, it reduces contact resistance and temperature rise, maintains low and stable contact resistance, reduces arcing, improves the electrical performance and lifespan of the contacts, and avoids malfunctions caused by poor contact.

[0042] In at least one embodiment, the common moving contact is a flexible moving contact, and the two ends of the flexible connecting portion of the common moving contact are located at different positions along the third direction.

[0043] Since the common moving contact is a flexible moving contact, the moving part of the common moving contact can easily switch positions between the stationary contacts on both sides. Since the two ends of the flexible connecting part are located at different positions along the third direction, the position of the moving part relative to the fixed part along the moving direction can be raised by using the flexible connecting part that is suitable for bending. This allows the common moving contact to be placed on one of the stationary contacts that is in the same position as the fixed part along the third direction, and it is easier to place it between the stationary contacts on both sides along its moving direction.

[0044] In addition, this utility model also provides a relay, which includes the contact portion as described in any of the preceding claims.

[0045] Because the relay includes the aforementioned contact portion in its overall structure and is equipped with a push portion and a drive portion to coordinately control the on / off state of each switch in the contact portion, the relay has the advantages of compact structure and miniaturization.

[0046] In at least one embodiment, the relay further includes a push portion connected to the moving contact of each switch in the contact portion to push each moving contact to close or open with a corresponding stationary contact; and a drive portion whose output terminal is connected to the push portion to drive the push portion.

[0047] Since the relay's actuating part contains at least two independent actuating units that are staggered in the second direction, and each actuating unit is connected to the moving end of a moving contact for driving, the actuating part adapts to and matches the positional differences of the moving contact in the contact part in the second direction. This avoids the uneven force transmission, deformation, or interference problems that may be caused by using a single actuating element, thereby ensuring the accuracy and reliability of each switch action.

[0048] In at least one embodiment, the pushing portion includes at least two pushing units offset in a second direction; each pushing unit is connected to the movable end of each of the moving contacts and is driven by the driving portion to move the connected movable end upward in a third direction.

[0049] Since the relay's drive section is equipped with at least two drive output terminals that are also staggered in the second direction, these drive output terminals are connected and driven one by one with the staggered drive units in the drive section. This ensures that the driving force or motion energy is accurately and effectively transmitted from the drive source to each independent drive unit through the shortest and most direct path, thereby improving the response speed, positioning accuracy and reliability of the entire drive system.

[0050] In at least one embodiment, the driving portion has at least two driving outputs offset in a second direction; each of the driving outputs drives each of the pushing units to move upward in a third direction in a corresponding manner.

[0051] By introducing a drive unit containing a motor and linking the rotating component and the push unit with the rotating component through specific first and second mating parts, the rotational motion of the motor is converted into the oscillating motion of the push unit. The motor output remains in the stopped position when rotation stops, giving the relay a self-locking capability. This means that after switching to a certain state (e.g., contact closed or open), it can maintain that state without continuous power supply to the motor, ensuring that the push unit can hold the moving contact in a specific position and reducing energy consumption caused by maintaining the position. The sliding fit structure between the push unit and the rotating component, compared to traditional linkage mechanisms, has advantages such as smaller size, higher motion trajectory accuracy, less impact force during pushing, and relatively lower requirements for component dimensional accuracy. Each of the two push units has a separate rotating component. Compared to using the same rotating component to push different push units simultaneously, the required extension dimension of the rotating component is shorter, the force transmission is more uniform, and it is less prone to deformation. Furthermore, the rotating component can be directly supported by the drive output without the need for additional support strength, further contributing to the miniaturization of the relay.

[0052] In at least one embodiment, the driving part includes a motor and a transmission mechanism; the output end of the motor is connected to the transmission mechanism and at least a portion of the transmission mechanism forms a driving output end; the pushing part further includes a rotating member; the rotating member is connected to the driving output end to be driven to rotate about a first axis and is provided with a first mating part; the pushing unit is provided with a second mating part that slides perpendicular to the first axis with the first mating part, so as to be driven by the rotating member to move in a third direction.

[0053] By defining the specific structures of the first and second mating parts as sliding grooves and their corresponding offset sliding pins, this pin-groove mating mechanism can precisely convert the rotational motion of the rotating component into the reciprocating oscillation of the driving unit. Therefore, the sliding trajectory is more accurate, the impact is less, the connection is more compact, the operation is more reliable, and it is less prone to mechanism jamming or reduced relay life due to scraping. Attached Figure Description

[0054] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This is a three-dimensional structural diagram of the relay in Example 1;

[0056] Figure 2This is a schematic diagram of the internal structure of the relay in Embodiment 1;

[0057] Figure 3 This is a three-dimensional structural diagram of the relay in Embodiment 1 from another perspective;

[0058] Figure 4 This is a schematic diagram of the internal structure of the relay in Embodiment 1 from another perspective;

[0059] Figure 5 This is a schematic diagram of the relay's X-axis direction in Example 1;

[0060] Figure 6 This is a schematic diagram of the relay's Z-axis direction in Example 1;

[0061] Figure 7 for Figure 6 Schematic diagram of section AA;

[0062] Figure 8 for Figure 6 Schematic diagram of the BB section;

[0063] Figure 9 This is a schematic diagram of the first and second switch groups in the contact portion of Embodiment 1;

[0064] Figure 10 This is a schematic diagram of the common stationary contact and stationary contact head of the contact portion in Embodiment 1;

[0065] Figure 11 This is a schematic diagram of the Z-axis direction of the relay in Embodiment 1, excluding the drive section;

[0066] Figure 12 This is a partial structural diagram of the relay in Example 1;

[0067] Figure 13 for Figure 12 Cross-sectional view of the structure shown;

[0068] Figure 14 This is a partial structural diagram of the pushing part in Embodiment 1;

[0069] Figure 15 This is a schematic diagram of the pusher component in Example 1.

[0070] Explanation of key figure labels:

[0071] Contact portion 100; First switch group 111; Second switch group 112; First switch 121; Second switch 122; Third switch 123; Moving contact 131; Moving contact 132; Pushed part 133; Fixed part 134; Actuating part 135; Flexible connection part 136; Common moving contact 137; Fixed end 138; Moving end 139; Stationary contact 141; Stationary contact 142; Common stationary contact 143; Stationary contact part 144; First contact part 145; Second contact part 146; Connecting part 147; Stationary contact 148; Mounting base 150; Base body 151; Connector 152; Partition wall 153; Connecting hole 154; Protrusion 155; Riveted end 156; Supporting end 157; Supporting hole 158; Wiring terminal 161; Pattern 162.

[0072] Pushing part 200; rotating part 210; main shaft 211; sliding pin 212; pushing unit 220; connecting body 221; pushing body 222; first elastic element 223; first limiting part 224; second limiting part 225; pushing part 226; sliding groove 227; side wall 228; overlapping part 229; metal swing arm 230; shaft connecting part 231; extension part 232; pushing connecting part 233; rotating shaft 240; swing block 250;

[0073] Drive section 300; drive output terminal 310. Detailed Implementation

[0074] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0075] Terminology Definition

[0076] In the claims and description of this utility model, unless otherwise specified, the use of terms such as "first," "second," or "third" is to distinguish different objects, rather than to describe a specific order.

[0077] Unless otherwise specified, in the claims and description of this utility model, the terms "X-axis direction", "Y-axis direction", "Z-axis direction", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0078] Unless otherwise specified, the terms "fixed connection" or "fixed connection" used in the claims and description of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, that is, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection by other devices or components.

[0079] Unless otherwise specified, the use of the terms "comprising," "having," and variations thereof in the claims and description of this utility model is intended to mean "including but not limited to."

[0080] In the claims and description of this utility model, unless otherwise specified, the term "switch module" shall be interpreted as: a basic constituent unit in the contact portion, which includes at least two moving contacts arranged along a first direction and at least two stationary contacts corresponding to these moving contacts. Its core structural feature is that the moving ends of adjacent moving contacts along the first direction face opposite directions along a second direction. This specific spatial arrangement achieves efficient utilization of the internal space of the relay and a compact overall structure.

[0081] In the claims and description of this utility model, unless otherwise specified, the term "first direction" shall be interpreted as: the direction along which multiple switches or moving contacts are arranged side by side in space, corresponding to the Y-axis direction shown in the figure.

[0082] In the claims and description of this utility model, unless otherwise specified, the term "second direction" shall be interpreted as: the direction in which a single moving contact extends from its fixed end to its movable end, which is perpendicular to or at an angle to the first direction, corresponding to the X-axis direction shown in the figures when the direction is perpendicular to the first direction, and not being 0 when the direction is at an angle to the first direction.

[0083] In the claims and description of this utility model, unless otherwise specified, the term "third direction" shall be interpreted as: the direction in which the moving end of the moving contact performs reciprocating motion (linear or oscillating) to achieve the closing or opening with the stationary contact, which is perpendicular to both the first and second directions and corresponds to the Z-axis direction shown in the figures.

[0084] In the claims and description of this utility model, unless otherwise specified, the term "switch" shall be interpreted as: "a switch includes a moving contact and a stationary contact," and should be understood as each switch must have a moving contact and a stationary contact for closing or opening the switch. When two or more switches share a single moving contact (i.e., a common moving contact), the shared moving contact can be closed or opened with the stationary contacts of these switches respectively.

[0085] In the claims and description of this utility model, unless otherwise specified, the term "moving contact" should be interpreted as: a component that moves entirely or partially by being pushed by a pushed part to close or open with a stationary contact. In this application, when "moving contact" is used to describe its position, orientation, or relative relationship with the limiting part, it should be understood to specifically refer to its movable main body, especially its actuating part for contacting the stationary contact.

[0086] In the claims and description of this utility model, unless otherwise specified, the terms "moving direction of the moving contact" and "closing direction of the moving contact" should be interpreted as follows: "moving direction of the moving contact" should be understood as bidirectional, for example, for a common moving contact, it refers to the direction of its reciprocating motion between two stationary contacts. "Closing direction of the moving contact" should be understood as unidirectional, referring to the direction of motion of the moving contact when it moves toward and finally contacts a specific stationary contact. The closing direction is one component of the moving direction. The moving direction or closing direction can be a linear motion direction or a tangential direction of oscillating motion.

[0087] In the claims and description of this utility model, unless otherwise specified, the term "orientation of the movable end along the second direction" shall be interpreted as: the position of the movable end on the second direction axis with the fixed end of the movable contact as a reference point. For example, if the fixed end of a movable contact is located at one end of the second direction axis, then its movable end is located at the other end of the axis, and that other end is its "orientation".

[0088] In the claims and description of this utility model, unless otherwise specified, the term "flexible moving contact" shall be interpreted as: a moving contact that achieves the swinging of the moving part by bending and deforming its own flexible connecting part.

[0089] In the claims and description of this utility model, unless otherwise specified, the terms "fixed part," "moving part," and "flexible connecting part" shall be interpreted as referring to the three parts constituting the flexible moving contact. The "fixed part" is the part that remains fixed relative to the stationary contact; the "moving part" is the part that is adapted to swing relative to the fixed part to close or open with the stationary contact; and the "flexible connecting part" is the flexible part that connects the fixed part and the moving part and provides bending function.

[0090] In the claims and description of this utility model, unless otherwise specified, the term "common moving contact" shall be interpreted as: in this application, specifically referring to a moving contact shared by at least two switches (forming a first switch group).

[0091] In the claims and description of this utility model, unless otherwise specified, the term "first switch group" shall be interpreted as: a set of at least two switches, wherein these switches share a common moving contact (i.e., a common moving contact), and the stationary contacts of each switch are located on both sides of the direction of action of the common moving contact, so as to realize the function of a changeover switch.

[0092] In the claims and description of this utility model, unless otherwise specified, the term "static contact" should be interpreted as: a component that remains fixed in position relative to the movement of the moving contact. In this application, when "static contact" is used to describe spatial distribution or relative position with the moving contact, it should be understood to specifically refer to the portion of the static contact that contacts the moving contact.

[0093] In the claims and description of this utility model, unless otherwise specified, the term "common stationary contact" shall be interpreted as: a stationary contact shared by at least one switch in the first switch group and at least one switch in the second switch group, which provides a stationary contact point for two independent switch circuits simultaneously through an integrated structure.

[0094] In the claims and description of this utility model, unless otherwise specified, the term "static contact portion" shall be interpreted as: a specific functional area on the common static contact portion that is provided separately for direct contact with the moving contact portion of each of its respective switches.

[0095] In the claims and description of this utility model, unless otherwise specified, the term "first contact portion" shall be interpreted as: the static contact portion on the common static contact that mates with the moving contact of the first switch group.

[0096] In the claims and description of this utility model, unless otherwise specified, the term "second contact portion" shall be interpreted as: the static contact portion on the common static contact that mates with the moving contact of the second switch group.

[0097] In the claims and description of this utility model, unless otherwise specified, the term "connecting part" shall be interpreted as: a structural part on the common stationary contact member used to connect the first contact part and the second contact part, and to form them into a whole. This part is at least partially injection molded integrally with the mounting base to achieve a stable fixation of the entire common stationary contact member.

[0098] In the claims and description of this utility model, unless otherwise specified, the term "sheet-like structure" should be interpreted as: a component shape whose size in one dimension (thickness) is much smaller than that in the other two dimensions. In this application, it defines the various parts of the common static contact element, intending to minimize its space occupation while ensuring sufficient conductive cross-sectional area.

[0099] In the claims and description of this utility model, unless otherwise specified, the term "terminal" shall be interpreted as: a pre-set structural part on a stationary contact, connector, or moving contact that is electrically connected to a connection terminal, wherein the connection terminal is a component for leading out to the outside of the relay and electrically connecting to an external circuit.

[0100] In the claims and description of this utility model, unless otherwise specified, the term "static contact" shall be interpreted as: an independent conductive component, one end of which is connected to the second contact portion of the common static contact, and the other end of which forms a terminal, the function of which is to provide a path for external electrical connection to the common static contact.

[0101] In the claims and description of this utility model, unless otherwise specified, the term "injection molding as a whole" shall be interpreted as: a manufacturing process in which one or more preforms (such as static contact parts or connectors) are placed in a mold, and then molten plastic is injected. After the plastic cools and solidifies, the preforms are firmly bonded to the plastic matrix to form a single, integral component.

[0102] In the claims and description of this utility model, unless otherwise specified, the term "mounting base" shall be interpreted as: a basic structural component in the contact portion, whose main function is to provide a precise and stable mounting reference for these components by injection molding them together with various stationary contacts, connectors, etc.

[0103] In the claims and description of this utility model, unless otherwise specified, the term "partition wall" shall be interpreted as: a wall-shaped protrusion structure provided on the mounting base, located between the first switch group and the second switch group, used to increase the creepage distance between the two switch groups, and can serve as a mounting support for the common stationary contact.

[0104] In the claims and description of this utility model, unless otherwise specified, the term "base" shall be interpreted as: the main component of the mounting base, usually made of plastic, and formed by injection molding together with various stationary contacts.

[0105] In the claims and description of this utility model, unless otherwise specified, the term "connector" shall be interpreted as: a pre-formed metal component that is injection molded as an integral part of the base, the main function of which is to provide a high-strength and high-reliability fixed connection point for the moving contact.

[0106] In the claims and description of this utility model, unless otherwise specified, the term "riveting end" shall be interpreted as: a structural part on the connector specifically designed for press-fitting with the moving contact, which is usually exposed from the base to facilitate assembly operations.

[0107] In the claims and description of this utility model, unless otherwise specified, the term "connection hole" shall be interpreted as: a hole made in the connector for connecting to an external wiring structure (such as a bolt or terminal) to achieve an electrical path.

[0108] In the claims and description of this utility model, unless otherwise specified, the term "holding end" shall be interpreted as: the end of the connector used to receive the holding force of the external support fixture during the riveting operation. Its function is to directly transmit the riveting force to the fixture, thereby protecting the base from deformation or damage due to impact during assembly.

[0109] In the claims and description of this utility model, unless otherwise specified, the term "top holding hole" shall be interpreted as: a hole provided in the base body for allowing the top holding end of the connector to protrude therefrom so as to contact an external support fixture.

[0110] In the claims and description of this utility model, unless otherwise specified, the term "pushing unit" shall be interpreted as: a collection of components that directly or indirectly push the moving contact member to move. In this application, its core components include a pushing member and a first elastic member.

[0111] In the claims and description of this utility model, unless otherwise specified, the term "push member" shall be interpreted as: the core rigid component within the push unit, which carries the functional structures such as the first limiting part and the second limiting part, and is used to transmit the driving force from the drive part, and to provide support for the first elastic member.

[0112] In the claims and description of this utility model, unless otherwise specified, the term "first elastic element" shall be interpreted as: an elastic element (such as a spring) provided in the actuating unit, whose main function is to provide stable and reliable contact pressure to the moving contact through the stored elastic potential energy when the moving contact and the stationary contact are closed.

[0113] In the claims and description of this utility model, unless otherwise specified, the term "first limiting part" should be interpreted as: a structure provided on the pusher member for limiting the separation of the moving contact from the stationary contact due to the electrodynamic repulsive force of the fault current through direct physical contact when the moving contact is closed. Its position is on the side of the moving contact's disconnection direction (the moving contact facing away from the corresponding stationary contact) (e.g., above the moving contact). Only with this understanding can the first limiting part contact or approach the moving contact along the closing direction of the moving contact and limit the disconnection distance of the moving contact when the moving contact is closed.

[0114] In the claims and description of this utility model, unless otherwise specified, the term "second limiting part" shall be interpreted as: a structure provided on the pusher for ensuring a reliable disconnection gap between the moving contact and the stationary contact by physical blocking when the moving contact is disconnected, or locking the moving contact in an intermediate isolation position.

[0115] In the claims and description of this utility model, unless otherwise specified, the term "housing" shall be interpreted as: the outer casing of a relay used to house and protect internal components such as contact parts, actuating parts, and driving parts.

[0116] In the claims and description of this utility model, unless otherwise specified, the term "driving part" shall be interpreted as: a component that receives external signals and generates power to drive the movement of the driving part, which in this utility model includes a motor and a transmission mechanism.

[0117] In the claims and description of this utility model, unless otherwise specified, the term "rotating component" shall be interpreted as: a core rotating component in a transmission mechanism used to convert the power of the driving part into a specific motion (such as oscillation or linear motion), such as a crankshaft or cam.

[0118] In the claims and description of this utility model, unless otherwise specified, the terms "first mating part and second mating part" shall be interpreted as: a pair of mutually mating structures respectively disposed on the rotating member and the pushing member, used to transmit the rotational motion of the rotating member into the oscillating or linear motion of the pushing member. For example, one of them may be a sliding pin and the other a sliding groove.

[0119] Example 1

[0120] Example 1 relates to a relay, such as Figure 1 As shown, the relay includes a contact portion 100, a push portion 200, a drive portion 300, and a housing. The contact portion 100 is used to control the on / off state of an external circuit or at least one branch thereof. The push portion 200 is used to actuate the contact portion 100 to close or open. The drive portion 300 is used to receive external signals or excitations to drive the push portion 200 to move. The housing houses the contact portion 100, the push portion 200, and the drive portion 300.

[0121] The drive section 300 is the power source for the relay, responsible for receiving external control signals and generating mechanical motion. The push section 200 acts as the transmission hub, precisely transmitting the motion generated by the drive section 300 to the contact section 100. The contact section 100 is the final component for controlling the on / off state of the circuit, and the state of its internal switch is directly controlled by the action of the push section 200.

[0122] The push portion 200 involved in Embodiment 1 is used to push the moving contact 131 in at least one switch in the contact portion 100 of the relay to close or open with the stationary contact 141. Before introducing the push portion 200, the contact portion 100 will be introduced first.

[0123] like Figure 1 and Figure 3 As shown, the contact portion 100 includes a mounting base 150 and at least one switch module. The switch module includes at least two moving contacts 131 arranged along a first direction, and at least two stationary contacts 141 corresponding to each moving contact 131. The switch module has at least one first switch group 111 consisting of two switches, and at least one second switch group 112 consisting of one switch. Each switch includes a moving contact 131 and a stationary contact 141 for closing or opening the switch. In this embodiment, the contact portion 100 includes three switches: a first switch 121, a second switch 122, and a third switch 123, wherein the third switch 123 can be referred to as... Figure 3 In this embodiment, the mounting base 150 serves as the mounting foundation for the moving contact 131 and stationary contact 141 of each switch in the contact portion 100, and the mounting base 150 is fixedly connected to the housing. The fixed connection method can be fastener connection, snap-fit, welding, etc.

[0124] Among them, reference Figure 2 , Figure 4 and Figure 5 In the switch module, each movable contact 131 has a fixed end 138 and a movable end 139 distributed along a second direction. The fixed end 138 is fixed relative to the corresponding stationary contact 141, and the movable end 139 is adapted to move linearly or swing relative to the fixed end 138 of the movable contact 131 in a third direction to close or open with the corresponding stationary contact 141. At least two movable ends 139 of adjacent movable contacts 131 in the first direction are oriented in opposite directions along the second direction. The second direction is perpendicular to the first direction or forms an angle with each other, and the third direction is perpendicular to both the first and second directions. In Embodiment 1, the second direction is perpendicular to the first direction, and the movable end 139 of the movable contact 131 swings relative to its fixed end 138 in a third direction.

[0125] like Figure 1 and Figure 2As shown, in this embodiment, the first switch 121 and the second switch 122 form a first switch group 111. In the first switch group 111, each switch shares a moving contact 131, and the shared moving contact 131 shares a common moving contact 137. The stationary contacts 141 of each switch are located on both sides of the common moving contact 137 along the direction of movement of the common moving contact 137 and are integrally injection molded with the mounting base 150. In this embodiment, the common moving contact 137 swings in a plane perpendicular to the Y-axis direction, and its effective direction of movement is the Z-axis direction. Therefore, the main direction of movement of the common moving contact 137 can be regarded as the Z-axis direction. The stationary contact 141 of the first switch 121 is located on the upper side of the common moving contact 137 along the Z-axis direction, and the stationary contact 141 of the second switch 122 is located on the lower side of the common moving contact 137 along the Z-axis direction.

[0126] In the first switch group 111, the common moving contact 137 is adapted to be closed or both open respectively with the stationary contacts 141 on both sides of its operating direction. (Refer to...) Figure 1 , Figure 2 and Figure 7 In the first switch group 111, two stationary contacts 141 are spaced apart along the Z-axis and each has a stationary contact 142. The stationary contacts 142 of the two stationary contacts 141 are symmetrically arranged at a certain distance along the Z-axis. The side of the stationary contacts 142 of the two stationary contacts 141 facing each other is used to cooperate with the moving contact 132 on the common moving contact 137. Moving contacts 132 are respectively provided on both sides of the common moving contact 137 along the Z-axis. The two sets of moving contacts 132 of the common moving contact 137 correspond to the stationary contacts 142 of the two stationary contacts 141. The common moving contact 137, driven by the pushing part 200, can cause one set of its moving contacts 132 to close or open with the corresponding stationary contact 142, or to open with both sets of stationary contacts 142, that is, to make both sets of moving contacts 131 of the common moving contact 137 spaced a certain distance from the corresponding stationary contacts 142.

[0127] Each movable contact 131 includes a fixed end 138 fixed relative to the mounting base 150 and a movable end 139 movable relative to the mounting base 150; the fixed end 138 is fixedly connected to the mounting base 150; the movable end 139 is adapted to move relative to the fixed end 138 of the movable contact 131 to close or open with the corresponding stationary contact 141. Specifically, in embodiment one, the common movable contact 137 adopts a flexible movable contact 131, such as... Figure 1 and Figure 2 As shown, the flexible moving contact 131 includes a fixing part 134, an actuating part 135, and a flexible connecting part 136. The fixing part 134 is fixed relative to each stationary contact 141 and is used to lead out the connecting terminal. Specifically, the fixing part 134 of the flexible moving contact 131 is the fixed end 138 of each moving contact 131, and the actuating part 135 is the movable end 139 of each moving contact 131.

[0128] In this embodiment, the fixing portion 134 of each flexible moving contact 131 extends along the X-axis direction, and is therefore perpendicular to the main movement direction of the moving contact 131, i.e., the Z-axis direction. The moving portion 135 is adapted to swing relative to the fixing portion 134 along the movement direction of the moving contact 131 to close or open with the stationary contact 141. The flexible connecting portion 136 connects the fixing portion 134 and the moving portion 135 and is adapted to bend. In this embodiment, the flexible moving contact 131 is made of a laminated metal sheet. Specifically, the two ends of the laminated metal sheet are welded to the fixing portion 134 and the moving portion 135 respectively, or the two ends of the laminated metal sheet are bonded, pressed, or fused to form the fixing portion 134 and the moving portion 135, and the middle part of the laminated metal sheet forms the flexible connecting portion 136. Furthermore, the stationary contact point 142 of the stationary contact 141 of the switch where the flexible moving contact 131 is located is tangentially positioned to face the swing trajectory of the moving portion 135. For example, the surface of the stationary contact 142 facing the moving contact 132 can be designed to be slightly inclined relative to the plane defined by the X-axis direction and the Y-axis direction, while the surface of the moving contact 132 facing the stationary contact 142 can be designed to be parallel to the plane defined by the X-axis direction and the Y-axis direction. When the actuating part 135 of the flexible moving contact 131 swings to make the moving contact 132 and the stationary contact 142 contact, the actuating part 135 causes the original contact surface of the moving contact 132 on it to be slightly inclined relative to the plane defined by the X-axis direction and the Y-axis direction due to the overall swinging action of the flexible moving contact 131. The angle of inclination is exactly the same as the angle of inclination of the contact surface of the stationary contact 142, so that the moving contact 132 and the stationary contact 142 can achieve ideal front-to-front contact when they contact, which is conducive to achieving a larger contact and conductive area and ensuring the contact performance between the moving contact 132 and the stationary contact 142.

[0129] In this embodiment, the common moving contact 137, which serves as the flexible moving contact 131, has two ends of its flexible connecting portion 136 located at different positions along the movement direction of the common moving contact 137, particularly the main movement direction Z-axis. One end of the flexible connecting portion 136 connected to the moving portion 135 is located along the Z-axis between the stationary contact 141 of the first switch 121 and the stationary contact 141 of the second switch 122. The other end of the flexible connecting portion 136 connected to the fixed portion 134 is located along the Z-axis below the end of the flexible connecting portion 136 connected to the moving portion 135. The moving portion 135 extends along the X-axis in the open state; that is, in the open state, the extension direction of the moving portion 135 is the length direction of the moving contact 131. The moving portion 135 can be connected to the pushing portion 200, allowing the moving contact 131 to be driven by the pushing portion 200, causing the moving portion 135 to swing relative to the fixed portion 134. The moving contact point 132 of the moving contact 131 is located on the moving portion 135.

[0130] Reference Figure 1 and Figure 2 The actuating portion 135 of the movable contact 131 has a certain width, with the width direction of the actuating portion 135 being the Y-axis direction. A pushed portion 133 is formed at the end of the actuating portion 135 opposite to the flexible connecting portion 136 along the X-axis direction. The pushed portion 133 and the movable contact 132 of the movable contact 131 are arranged in the X-axis direction. The pushed portion 133 is connected to the pushing portion 200. On the actuating portion 135, the width of the pushed portion 133 is smaller than the width of the portion used to set the movable contact 132, and the pushed portion 133 is approximately located at the middle position in the width direction of the actuating portion 135. Of course, it is worth noting that in some possible embodiments, the part of the movable contact 131 used to connect with the pushing part 200 can also be directly formed by the part of the actuating part 135 on which the movable contact 132 is installed. In this case, the actuating part 135 does not need to extend other parts to form the pushed part 133. In order to ensure the current carrying capacity of the movable contact 131, the width of the actuating part 135 can be consistent with the width of other parts on the movable contact 131 used for current carrying and ensure a uniform width at each position, without needing to reduce it at local positions.

[0131] Reference Figure 3 and Figure 4 The contact portion 100 also has a second switch group 112 formed by a switch, which is a third switch 123. The third switch 123 uses the same flexible moving contact 131 as the two switches in the first switch group 111, except that the moving contact 131 is not used as a common moving contact 137. The stationary contact 141 of the third switch 123 is located below the moving contact 131 along the Z-axis, and the stationary contact 142 and the moving contact 132 are positioned opposite each other.

[0132] Furthermore, the moving contact 131 in the second switch group 112 is adjacent to the common moving contact 137 in the first switch group 111 along a first direction, and their moving ends 139 face opposite directions along a second direction. The stationary contact 141 in the second switch group 112 is electrically connected to at least one stationary contact 141 in the first switch group 111. Specifically, in the switch module, in the first switch group 111 and the second switch group 112 adjacent to the moving contact 131, two stationary contacts 141 with an electrical connection are integrally structured and constitute a common stationary contact 143. In Embodiment 1, the first switch group 111 and the second switch group 112 share a single stationary contact 141; specifically, the first switch 121 in the first switch group 111 and the third switch 123 in the second switch group 112 share a single stationary contact 141, which is the common stationary contact 143. (Refer to...) Figure 2 , Figure 4 and Figure 5The common stationary contact 143 is provided with stationary contact points 142 corresponding to the first switch 121 and the third switch 123 respectively, wherein the stationary contact point 142 of the first switch 121 is downward along the Z-axis direction, and the stationary contact point 142 of the third switch 123 is upward along the Z-axis direction.

[0133] Based on the above description of the switch module, it can be seen that the switch module includes at least two moving contacts 131 arranged along the first direction, belonging to at least two different switch groups. Embodiment 1 shows the structure of two switch groups and two moving contacts 131. In other embodiments, the switch module may include three moving contacts 131 arranged along the first direction. These three moving contacts 131 each have a fixed end 138 and a movable end 139, and the fixed ends 138 of the three are staggered, and the movable ends 139 are also staggered. That is, the position of the fixed end 138 of one moving contact 131 along the second direction corresponds to the position of the movable end 139 of the adjacent moving contact 131 along the second direction; and the positions of the stationary contacts 141 corresponding to the movable ends 139 of these three moving contacts 131 are also staggered. In Embodiment 1, in the switch module, the length directions of two adjacent movable contacts 131 along the first direction are parallel. The length direction of the movable contact 131 is defined by the projection of the line connecting its fixed end 138 and movable end 139 onto a projection plane perpendicular to a third direction. The length direction of the movable contact 131 is the direction of the line connecting its fixed end 138 and movable end 139, which is the X-axis direction in Embodiment 1. The parallel length directions of two adjacent movable contacts 131 indicate that the two movable contacts 131 are arranged in a regular side-by-side along the Y-axis direction. Of course, in other embodiments, the length directions of two adjacent movable contacts 131 may not be parallel; that is, the two movable contacts 131 can be arranged in a mutually inclined posture along the first direction. In this case, the line connecting the fixed end 138 and movable end 139 of the two movable contacts 131 intersects on a projection plane perpendicular to a third direction. The opposite orientation of their movable ends 139 along the second direction can be considered as an approximate opposite in direction, rather than an absolute opposite in the same direction.

[0134] In this configuration, all moving contacts 131 are linked together so that the contact portion 100 has at least three contact states. The first contact state is when the common moving contact 137 and the common stationary contact 143 in the first switch group 111 are closed and the moving contact 131 and the common stationary contact 143 in the second switch group 112 are open. The second contact state is when the common moving contact 137 and another stationary contact 141 in the first switch group 111 are closed and the moving contact 131 and the common stationary contact 143 in the second switch group 112 are closed. The third contact state is when all switches in the first switch group 111 and the second switch group 112 are open. Specifically, the oscillation direction of the common moving contact 137 in the first switch group 111 and the moving contact 131 in the second switch group 112 is the same. That is, when the actuating part 135 of the common moving contact 137 rises along the Z-axis, the actuating part 135 of the moving contact 131 of the first switch 121 also rises along the Z-axis. At this time, the first switch 122 is closed and the third switch 123 is open. Conversely, when the actuating part 135 of the common moving contact 137 moves downward along the Z-axis, the actuating part 135 of the moving contact 131 of the third switch 123 also moves downward along the Z-axis. At this time, the first switch 121 is open, the second switch 122 is closed, and the third switch 123 is closed. There is also a state where both the first switch 121 and the second switch 122 are open, and the third switch 123 is also open. In Embodiment 1, the closed state of the first switch 121 is defined as the first contact state, the closed state of only the second switch 122 and the third switch 123 is defined as the second contact state, and the open state of all three switches is defined as the third contact state. Figure 7 and Figure 8 As shown, at this time, the moving contact 132 of the moving contact 131 is not in contact with the stationary contact 142 of the stationary contact 141 of the first switch 121 and the second switch 122, and the relay is in the third contact state.

[0135] Reference Figure 9 and Figure 10The common stationary contact 143 has a stationary contact portion 144 corresponding to its two corresponding switches. The stationary contact portion 144 is provided with a stationary contact 142 for cooperating with the moving contact 132 on the moving contact 131. The closing directions of the switches corresponding to the two stationary contact portions 144 are opposite. Specifically, the common stationary contact 143 has a stationary contact portion 144 corresponding to the first switch 121 and the third switch 123. Both of the stationary contact portions 144 are provided with stationary contacts 142. The first end of the stationary contact 142 on the stationary contact portion 144 corresponding to the common moving contact 137 in the first switch 121 is set towards the moving contact 142 of the moving contact 131 along the Z-axis. The second end of the stationary contact 142 on the stationary contact portion 144 corresponding to the moving contact 131 in the third switch 123 is set towards the moving contact 131 along the Z-axis. The first end and the second end are oriented oppositely in the Z-axis direction. Therefore, the closing directions of the switches corresponding to the two stationary contact portions 144 are opposite. When the movable ends 139 of the two moving contacts 131 swing to the same position along the Z-axis, the contact states of the first switch 121 and the third switch 123 are opposite. For example, when the first switch 121 is closed, the third switch 123 is open, and vice versa.

[0136] Reference Figure 1 and Figure 3 Both the stationary contact 141 and the moving contact 131 in the contact portion 100 are fixedly connected to the mounting base 150. The mounting base 150 includes a base body 151 and a connector 152. The base body 151 is made of plastic, and the connector 152 is made of metal. The stationary contact 141 and stationary contact head 148 (see description below) are injection molded integrally with the base body 151, and the connector 152 is injection molded integrally with the base body 151. The fixed end 138 of the moving contact 131 is then fixedly connected to the connector 152. The connection between the moving contact 131 and the connector 152 can be achieved by riveting, welding, screwing, or using fasteners. In Embodiment 1, the moving contact 131 and the connector 152 are fixedly connected by riveting. Furthermore, the relay is connected to an external circuit via a connection terminal (not shown in the figure). In Embodiment 1, the connector 152 can be a conductive metal, and the connection terminal electrically connected to the moving contact 131 can be formed or disposed on the connector 152. The direction in which the connection terminal leads out of the relay can be arbitrarily set as needed. At the same time, the connection terminal electrically connected to the stationary contact 141 can be directly formed or disposed on the stationary contact 141, and can be led out of the relay in any direction as needed.

[0137] At least a portion of the common static contact 143 is integrally molded with the mounting base 150 via injection molding. (Refer to...) Figure 9 and Figure 10In Embodiment 1, the common stationary contact 143 is an integral structure, including a first contact portion 145 that cooperates with the switch of the first switch group 111, a second contact portion 146 that cooperates with the switch of the second switch group 112, and a connecting portion 147 connecting the first and second contact portions 146; the common stationary contact 143 is injection molded integrally with the mounting base 150 at least in terms of the connecting portion 147; the first contact portion 145 and the second contact portion 146 are provided with stationary contacts 142 for cooperating with the moving contact 132 on the moving contact 131. (Refer to...) Figure 12 and Figure 13 In this embodiment, the second contact portion 146 and the connecting portion 147 on the common stationary contact 143 are injection molded together with the seat body 151 of the mounting base 150.

[0138] Reference Figure 5 The first switch group 111 and the second switch group 112 are arranged in the first direction; refer to Figure 9 and Figure 10 The first contact portion 145, the connecting portion 147, and the second contact portion 146 of the common stationary contact 143 are arranged sequentially along a first direction, the connecting portion 147 extends in a second direction, and the first contact portion 145 and the second contact portion 146 are staggered in the second direction; the second direction is perpendicular to the first direction. Further, referring to... Figure 9 and Figure 10 The first contact portion 145 and the second contact portion 146 are also staggered in the third direction, and they are provided with stationary contact points 142 on the opposite side; the connecting portion 147 extends in the third direction; the third direction is perpendicular to both the first direction and the second direction.

[0139] Specifically, the first contact portion 145, the second contact portion 146, and the connecting portion 147 are all sheet-like structures; the first contact portion 145 and the second contact portion 146 are perpendicular to a third direction; the connecting portion 147 is perpendicular to a first direction. In Embodiment 1, the common stationary contact 143 is a conductive metal part integrally stamped and bent. This common stationary contact 143 can simultaneously serve as the stationary contact 141 of both the first switch and the third switch. Therefore, the common stationary contact 143 is provided with the first contact portion 145 and the second contact portion 146. The first contact portion 145 and the second contact portion 146 are generally parallel sheet-like platforms, with stationary contact points 142 on their extended surfaces, and their principal planes are perpendicular to the Z-axis direction. The connecting portion 147 connects the first contact portion 145 and the second contact portion 146, extending mainly within the plane defined by the X-axis and Z-axis directions, thereby achieving spatial misalignment of the first contact portion 145 and the second contact portion 146 in the X-axis and Z-axis directions.

[0140] In addition, refer to Figure 11 , Figure 12 and Figure 13The mounting base 150 is provided with a partition wall 153; the partition wall 153 is located between the first switch group 111 and the second switch group 112 along a first direction; the connecting portion 147 of the common stationary contact 143 is at least partially injection molded integrally with the partition wall 153. Furthermore, in Embodiment 1, the two stationary contacts 141 corresponding to the two switches in the first switch group 111 are arranged along a third direction on both sides of the moving contact 131, where one stationary contact 141 is a common stationary contact 143, the first contact portion 145 of which extends from the partition wall 153 and corresponds to the common moving contact 137, and the other stationary contact 141 is injection molded integrally with the mounting base 150; the stationary contact 141 corresponding to one switch in the second switch group 112 is a common stationary contact 143, the second contact portion 146 of which extends from the partition wall 153 and corresponds to the moving contact 131 of that switch, and is injection molded integrally with the mounting base 150. In Embodiment 1, the partition wall 153 of the mounting base 150 is a raised wall-like structure formed on the base body 151. It extends in the X-axis direction, protrudes and extends in the Z-axis direction, and has a certain thickness in the Y-axis direction. It separates the first switch group 111 and the second switch group 112 in the Y-axis direction, and its height in the Z-axis direction is approximately adapted to the range defined by the two switch groups. The extension direction of the connecting portion 147 of the common stationary contact 143 is generally consistent with that of the partition wall 153. At the same time, the connecting portion 147 of the common stationary contact 143 is firmly embedded in the partition wall 153 of the mounting base 150 during the injection molding process. Along the Y-axis direction, the first contact portion 145 extends from the partition wall 153 toward the first switch group 111, and the second contact portion 146 extends from the partition wall 153 toward the second switch group 112. Since the second contact portion 146 is closer to the lower part of the base 151 along the Z-axis direction, the second contact portion 146 is directly injection molded with the base 151.

[0141] Reference Figure 7 and Figure 8 The terminals 161 of each stationary contact 141 in the first switch group 111 and the second switch group 112 for external wiring are led out in the same direction to the mounting base 150 and exposed on the outer surface of the relay.

[0142] Reference Figure 7 and Figure 9 In the first switch group 111, at least one stationary contact 141, excluding the common stationary contact 143, is integrally injection molded with the mounting base 150 and is cylindrical. One end of the stationary contact 141 extends out of the mounting base 150 and forms a terminal 161, while the other end extends out of the mounting base 150 and is provided with a stationary contact 142 for cooperating with the moving contact 132 on the common moving contact 137. In Embodiment 1, the stationary contact 141 is an integral metal cylinder extending along the Z-axis direction, with its upper end (e.g., Figure 1Part of it is exposed on the mounting base 150, and a stationary contact 142 is provided on the end face for cooperating with the upper moving contact 132 of the common moving contact 137. Its lower end extends out of the bottom surface of the mounting base 150 and is used directly as a wiring terminal 161.

[0143] Reference Figure 8 and Figure 10 The second switch assembly 112 also includes a stationary contact 148 integrally injection molded with the mounting base 150. One end of the stationary contact 148 is connected to the second contact portion 146 of the common stationary contact 143, and the other end protrudes from the mounting base 150 to form a terminal 161. In Embodiment 1, the second contact portion 146 of the common stationary contact 143 itself does not directly lead out to the terminal 161, but rather achieves external electrical connection through a stationary contact 148. Figure 10 As shown, the stationary contact 148 is an independent metal part. Its upper end is firmly connected to the second contact portion 146 of the common stationary contact 143 before injection molding, and its lower end is designed as a terminal 161 that can protrude from the bottom surface of the mounting base 150. During the injection molding process, the connection portion 147 between the stationary contact 148 and the common stationary contact 143, as well as the main body of the stationary contact 148, are embedded in the mounting base 150. Alternatively, the stationary contact 148 may simply touch the second contact portion 146 of the common stationary contact 143 to form an electrical connection before injection molding, and during the injection molding process, the mounting base 151 itself fixes the stationary contact 148 and the common stationary contact 143, connecting them into a whole.

[0144] Reference Figure 7 and Figure 8 The connector 152 defines an extending direction, and along the extending direction, one end of the connector 152 or a portion thereof protrudes from the base 151 to form a riveting end 156; the movable contact 131 is press-fitted to the riveting end 156 along the extending direction. The connector 152 has a connecting hole 154 for external connection at one end along the extending direction.

[0145] The connector 152 has a protrusion 155 that protrudes outward and perpendicular to the extending direction. The protrusion 155 is at least partially embedded in the base 151, and the protrusion 155 forms a riveting end 156 at one end in the extending direction and a holding end 157 at the other end in the extending direction; the holding end 157 protrudes from the base 151. (Refer to...) Figure 11The base 151 has a top-holding hole 158 along its extending direction for exposing the top-holding end 157. In Embodiment 1, the connector 152 is generally a columnar member with an open countersunk hole inside, which is the connection hole 154. The connection hole 154 can be connected to an external connection terminal via studs or the like to achieve electrical connection with an external circuit component, thereby allowing the relay to be installed in an external circuit component. Similarly, the connection hole 154 can also be provided in the stationary contact 148 and the independent columnar stationary contact 141. The connector 152 extends along the Z-axis and is mostly injection molded integrally with the base 151. One end protrudes from the surface of the base 151, forming a riveting end 156. The riveting end 156 can have a conventional knurled structure like a press-fit nut or a pointed protrusion. The fixing portion 134 of the movable contact 131 can be press-fitted to the riveting end 156 of the connector 152 along its extension direction, thereby fixing the movable contact 131 to the mounting base 150 and simultaneously establishing an electrical connection between the movable contact 131 and the connector 152. A protrusion 155, perpendicular to the Z-axis, is provided on the outer side of the connector 152 near the riveting end 156. The protrusion 155 can surround the outer periphery of the connector 152. The downward end of the protrusion 155 along the Z-axis forms the aforementioned riveting end 156, and the upward end forms a supporting end 157. Meanwhile, a support hole 158 is provided on the base 151 along the Z-axis direction. The upper end of the support hole 158 is open, exposing the support end 157. When the moving contact 131 is riveted, the external tooling fixture can directly support the support end 157 through the support hole 158 on the base 151. In this way, the huge impact force generated during riveting is directly borne by the metal connector 152 and the external tooling, and is not transmitted to the relatively fragile plastic base 151, thereby effectively preventing the base 151 from cracking or deforming during assembly and preventing the connector hole 154 from deforming.

[0146] Furthermore, referring to Figure 9 At least a portion of the surface of the portion of the stationary contact 141 embedded in the mounting base 150 in the first switch assembly 111 is provided with a pattern 162 to increase the contact area with the mounting base 150 and to prevent the stationary contact 141 from rotating relative to the mounting base 150. Also, refer to... Figure 7 and Figure 8 At least a portion of the surface of the part of the connector 152 embedded in the base 151 is provided with a pattern 162 to increase the contact area with the base 151 and prevent the connector 152 from rotating relative to the mounting base 150. To ensure a more secure bond between the metal prefabricated parts such as the stationary contact 141, stationary contact 148, and connector 152 and the plastic mounting base 150, these metal parts have patterns 162 machined on the surfaces of the portions embedded in the plastic. Figure 9 and Figure 10The cross-hatching pattern shown on the stationary contact 148 can be knurled, grooved, or raised. During injection molding, molten plastic fills the gaps in these patterns 162, and after cooling and solidification, forms a strong mechanical interlocking structure.

[0147] The actuating part 200 is connected to the moving contact 131 of each switch in the contact part 100 to actuate each moving contact 131 to close or open with the corresponding stationary contact 141. The structure of the actuating part 200 will be described in detail below.

[0148] Reference Figures 1 to 4 The pushing part 200 includes two pushing units 220 and two rotating members 210. The two pushing units 220 are offset in a second direction; each pushing unit 220 is connected to the movable end of each moving contact 131 in a one-to-one correspondence, and is driven by the driving part 300 to drive the connected movable end to move upward in a third direction. The pushing unit 220 includes a pushing member 226 and a first elastic member 223. The pushing member 226 includes a pushing body 222 and a connecting body 221. The pushing unit 220 is adapted to be driven to move in a predetermined direction to push at least one moving contact 131 to close or open with the stationary contact 141. The pushing unit 220 can be driven by the driving part 300 to move, and the overall movement of the pushing unit 220 can be linear or oscillating. The first elastic member 223 is arranged corresponding to the closing direction of the moving contact 131 and is placed between the pushing member 226 and the moving contact 131 to provide the moving contact 131 with the contact pressure of closing with the stationary contact 141 when the moving contact 131 closes with the stationary contact 141.

[0149] In Embodiment 1, the structures of the pushing units 220 used in the first switch group 111 and the second switch group 112 are different, but both pushing units 220 swing along a predetermined direction, and the first direction is perpendicular to the tangent of the direction of motion of the pushing unit 220 at at least one position along the predetermined direction. The motion trajectory of the pushing unit 220 is an arc. When the swing amplitude of the pushing unit 220 is small, the effective stroke direction for driving the moving contact 131 is the Z-axis direction. When the moving contact 131 is in the third contact state, that is, when the moving part 135 of the moving contact 131 extends approximately along the X-axis direction, the pushing unit 220 is approximately at the midpoint of its motion trajectory. The tangent of this midpoint is perpendicular to the X-axis direction, that is, the tangent is along the Z-axis direction.

[0150] First, the driving unit 220 and its auxiliary structures in the first switch group 111 will be described. (Refer to...) Figure 1 and Figure 2In the first switch group 111, a pusher 226 is used to switch the state of the first switch 121 and the second switch 122. The pusher 226 includes a pusher body 222 and a connecting body 221. The pusher body 222 abuts against the first elastic member 223 along the Z-axis. The pusher body 222 and the pushed portion 133 of the common moving contact 137 can be provided with a sleeve post for engaging with the first elastic member 223. The two ends of the spring-shaped first elastic member 223 can be sleeved to the sleeve post, thereby preventing the first elastic member 223 from disengaging from the pusher body 222 and the common moving contact 137. The pusher body 222 can drive the moving portion 135 of the common moving contact 137 to swing by applying force to the first elastic member 223. The connecting body 221 can be integrally formed with the pusher body 222 or separately fixedly connected. The connecting body 221 can cooperate with the rotating member 210 to make the pusher unit 220 move as a whole. The pusher 222 has side walls 228 perpendicular to the first direction, which is the Y-axis direction. The pusher 222 also has a bottom wall and a top wall in the Z-axis direction. The bottom wall, top wall, and two side walls 228 enclose the pusher 222 to form a frame-like structure. The connecting body 221 is located above the top wall of the pusher 222 along the Z-axis direction.

[0151] Reference Figure 1 and Figure 2 The push unit 220 in the first switch group 111 can swing relative to the mounting base 150 via a metal swing arm 230 and a rotating shaft 240. There are two metal swing arms 230, which are flat and elongated, extending along the X-axis. A shaft connecting portion 231, an extension portion 232, and a push connecting portion 233 are provided along the length of each metal swing arm 230. The shaft connecting portion 231 is pivotally connected to the rotating shaft 240, and the rotating shaft 240 is fixedly or pivotally connected to the mounting base 150, thereby allowing the metal swing arm 230 to swing relative to the mounting base 150 around the rotating shaft 240. The extension portion 232 connects the shaft connecting portion 231 and the push connecting portion 233. The push connection 233 is connected to the side wall 228 of the push body 222 to achieve a fixed connection between the metal swing arm 230 and the push body 222. The push connection 233 can be connected to the side wall 228 of the push body 222 by insert injection molding, riveting, welding, bonding, etc., or it can be connected to the intermediate component fixed to the push body 222 by riveting, welding, or bonding. The metal swing arm 230 and the rotating shaft 240 can be made of metal.

[0152] Reference Figure 1 and Figure 2The rotating member 210 is provided with a first mating portion, which can be driven by the driving portion 300 to rotate around a first axis. The pushing member 226 is provided with a second mating portion that slides in a direction perpendicular to the first axis, so that it can be driven by the rotating member 210 to swing around a second axis parallel to the first axis or move linearly in a third direction. Furthermore, when the pushing unit 220 pushes at least one moving contact 131 to close with the stationary contact 141, the direction of the force exerted by the second mating portion on the first mating portion passes through or is close to the first axis. One of the first and second mating portions is a sliding groove 227 extending perpendicular to the first axis, and the other is a sliding pin 212 extending into the sliding groove 227 along the direction of the first axis, the sliding pin 212 being offset relative to the first axis. In Embodiment 1, a sliding pin 212 is provided on the rotating member 210, and a sliding groove 227 is provided on the connecting body 221. (Refer to...) Figure 7 and Figure 12 The sliding groove 227 provided on the connecting body 221 extends along the X-axis direction, and its extension length is slightly larger than the diameter of the circle formed by the rotation of the sliding pin 212. (Refer to...) Figure 15 The rotating member 210 includes a main shaft 211 connected to the driving part 300 and a sliding pin 212 eccentrically disposed relative to the main shaft 211. The dotted line passing through the main shaft 211 of the rotating member 210 along the Y-axis direction is the first axis. With the rotation of the rotating member 210, the sliding pin 212 slides in the sliding groove 227 and applies force to the pushing member 226. The pushing member 226 is restricted by the metal swing arm 230 and the rotating shaft 240, and swings approximately in the Z-axis direction, thereby causing the actuating part 135 of the common moving contact 137 to swing. For example, the sliding pin 212 rotates with the rotating member 210 to... Figure 7 As shown in the diagram, the common moving contact 137 is disconnected from both stationary contacts 141. Then, the rotating member 210 rotates 90° clockwise, causing the sliding pin 212 to swing 90° around the first axis. The sliding pin 212 is at its highest position along the Z-axis. At this point, the actuating part 135 of the common moving contact 137 swings upward, and the moving contact 132 located above the actuating part 135 along the Z-axis contacts the stationary contact 142 located above the common moving contact 137 along the Z-axis, closing the first switch 121. Afterward, the rotating member 210 rotates 90° counterclockwise, and the common moving contact 137 returns to the third contact state. Then the rotating part 210 rotates counterclockwise by 90°, and the sliding pin 212 swings around the first axis by 90°. The sliding pin 212 is located at the lowest position along the Z-axis. At this time, the moving part 135 of the common moving contact 137 swings downward, and the moving contact 132 located on the lower side of the moving part 135 along the Z-axis contacts the stationary contact 142 located on the lower side of the common moving contact 137 along the Z-axis, thus closing the second switch 122.

[0153] Furthermore, when the sliding pin 212 is at its highest and lowest positions in the Z-axis direction, that is, when the pushing unit 220 pushes the common moving contact 137 to close with any of the stationary contacts 141, the direction of the force exerted by the sliding groove 227 on the sliding pin 212 is vertical and actually passes through the first axis. Considering the error during operation, the force exerted by the sliding groove 227 on the sliding pin 212 can also be considered to be close to the first axis. The force exerted by the sliding groove 227 on the sliding pin 212 here is a positive or negative force formed by the pushing unit 220 as a whole on the moving contact 131 and then on the rotating member 210. The negative force occurs when an electric repulsive force occurs when the switch is closed.

[0154] Reference Figure 1 and Figure 2 The first switch group 111 includes a first switch 121 and a second switch 122 sharing a common moving contact 137. Therefore, it includes two first elastic elements 223, which are located above and below the pushed portion 133 of the common moving contact 137 along the Z-axis, respectively, and abut against the pushed portion 133. The first elastic elements 223 are springs. Connecting posts for engaging with the first elastic elements 223 can be provided on the pushed portion 133 of the common moving contact 137 and the pushing body 222 to ensure the stability of the first elastic elements 223. The abutment positions of the two first elastic elements 223 against the pushing body 222 are the bottom wall and top wall of the pushing body 222, respectively, allowing the pushing member 226 to apply force to the common moving contact 137 along the Z-axis using the first elastic elements 223. Furthermore, since two first elastic elements 223 are provided in the first switch group 111, the closing of the first switch 121 and the second switch 122 can achieve the overtravel closing effect through the first elastic elements 223.

[0155] Next, the actuation unit 220 and its associated structures in the second switch group 112 will be described. (Refer to...) Figure 3 and Figure 4The actuating unit 220 in the second switch group 112 achieves the state switching of the third switch 123 through a actuating member 226. The actuating member 226 includes a actuating body 222 and a connecting body 221. Unlike the actuating unit 220 in the first switch group 111, since the moving contact 131 in the third switch 123 has only one closing direction, the actuating unit 220 only has one first elastic member 223. The upper end of the first elastic member 223 is connected to the top wall of the actuating body 222 in an abutting manner, and the lower end is connected to the actuating part 135 of the moving contact 131 in an abutting manner. Simultaneously, the actuating body 222 is provided with an overlapping portion 229, which is a flange structure where the bottom edges of the two side walls 228 of the actuating body 222 protrude towards each other along the Y-axis direction. The actuating part 135 of the moving contact 131 will overlap the overlapping part 229 under the force of the first elastic member 223. However, after the pushing unit 220 pushes the actuating part 135 of the moving contact 131 to swing downward along the Z-axis until the third switch 123 is closed, the actuating part 135 of the moving contact 131 will leave the overlapping part 229 and achieve an overtravel closing effect under the action of the first elastic member 223. The cooperation structure and relative motion law of the rotating member 210 and the connecting body 221 in the second switch group 112 are the same as those in the first switch group 111, and will not be described in detail here. In other embodiments, the overlapping part 229 can also be set as a bottom wall connected to the bottom edge of the two side walls 228 along the Z-axis. The bottom wall forms a through hole along the Z-axis for avoidance corresponding to the moving contact 132, so that the moving contact 132 can contact the corresponding stationary contact 142 through the through hole.

[0156] Furthermore, in Embodiment 1, the actions of the two push units 220 corresponding to the first switch group 111 and the second switch group 112 are linked together so that the moving contacts 131 in the first switch group 111 and the second switch group 112 have the same motion state. Specifically, both push units 220 are driven by the torque output from the drive part 300 transmitted to the rotating member 210, and the two rotating members 210 are in the same position at the same time. For example, when the rotating member 210 linked to the push unit 220 corresponding to the first switch group 111 rotates to the highest position along the Z-axis, the common moving contact 137 swings upward to close the first switch 121. At the same time, the moving contact 131 in the second switch group 112 also swings upward under the action of the other rotating member 210 on the push unit 220, causing the third switch 123 to open. Alternatively, when the rotating member 210 linked to the push unit 220 corresponding to the first switch group 111 rotates to the lowest position along the Z-axis, the common moving contact 137 swings downward to close the second switch 122. At the same time, the moving contact 131 in the second switch group 112 also swings downward under the action of the other rotating member 210 on the push unit 220, causing the third switch 123 to close. Alternatively, when the rotating member 210 of the push unit 220 corresponding to the first switch group 111 rotates to the middle position along the Z-axis, the common moving contact 137 is located in the middle of the two corresponding stationary contacts 141, the first switch 121 and the second switch 122 are disconnected, and at the same time, the moving contact 131 in the second switch group 112 also swings under the action of the other rotating member 210 on the push unit 220, causing the third switch 123 to be disconnected.

[0157] In addition, refer to Figure 3 and Figure 4 The push unit 220 in the second switch group 112 is connected to the mounting base 150 by a swing block 250 and a rotating shaft 240. Since the moving contact 131 in the second switch group 112 is not used as the common moving contact 137, the swing block 250 can be a solid flat plate extending a certain length along the X-axis, with its width approximately the same as the width of the moving contact 131. One end of the block can be connected to the push member 226 of the second switch group 112, or the two can be integrally formed. The other end is pivotally connected to a rotating shaft 240, which is then fixed or pivotally connected to the mounting base 150.

[0158] In addition, refer to Figure 7 and Figure 14 The pusher 226 is provided with a first limiting part 224, which is provided corresponding to the closing direction of the moving contact 131 and extends a preset length along the Y-axis direction, so as to contact or approach the moving contact 131 along the closing direction of the moving contact 131 when the moving contact 131 and the stationary contact 141 are closed, and limit the distance of separation between the moving contact 131 and the stationary contact 141. (Refer to...) Figure 4 and Figure 7 For the two different pushers 222, the number and structure of the first limiting part 224 are different. The pusher 222 of the first switch group 111 has two first limiting parts 224 located on both sides of the common moving contact 137 along the Z-axis direction. The pusher 222 of the second switch group 112 has one first limiting part 224 located above its moving contact 131 in the Z-axis direction (e.g., Figure 1 The first limiting part 224 can be integrally formed on the pushing body 222.

[0159] The first limiting part 224 extends a predetermined length along the Y-axis, which can be in two ways. The first way can be referred to... Figure 4 The inner side wall 228 of the pusher 222 has first limiting portions 224 on both sides in the Y-axis direction. These first limiting portions 224, when in the closed state, cooperate with the actuating part 135 of the movable contact 131 to limit the swing range of the movable contact 131. These first limiting portions 224 have two independent parts, both formed on the pusher 222 and each having a certain thickness in the Y-axis direction. In other words, the first limiting portions 224 extend a predetermined length in the first direction. It should be understood that... Figure 4 In the provided example, the pushing body 222 includes two parts (defined as the first pushing part and the second pushing part, respectively). The first pushing part is fixedly connected to the connecting body 221. For example, both the first pushing part and the connecting body 221 are made of plastic and molded as one piece, and are used for the first elastic member 223 to abut against. The second pushing part has two connecting walls and a bottom wall. The two connecting walls are spaced apart along the Y-axis and are fixedly connected to both sides of the first pushing part along the Y-axis to form two side walls 228. The bottom wall is connected to the bottom edge of the two connecting walls along the Z-axis to form an overlap 229. The second case can be referred to... Figure 7 and Figure 14 The portion of the pusher 222 between its two sidewalls 228 along the Y-axis forms a wall-like structure extending a considerable distance along the Y-axis. This wall-like structure forms a first limiting portion 224 extending a predetermined length along the Y-axis. Furthermore, in the second case, the two edges of the wall-like first limiting portion 224 in the Y-axis direction can be correspondingly connected to the two sidewalls 228 of the pusher 222, that is, the first limiting portion 224 blocks part of the opening in the X-axis direction of the pusher 222 that was originally formed by the sidewalls 228, the top wall, and the bottom wall.

[0160] Based on the above, it can be understood that, referring to Figure 7 and Figure 14In this embodiment, the pusher 226 has sidewalls 228 on both sides of the movable contact 131 in the first direction, and the first limiting part 224 is disposed between the two sidewalls 228 along the first direction. The first limiting part 224 has a wall-like structure, and its two edges in the first direction are respectively connected to the two sidewalls 228. Alternatively, as in the second switch group 112, the first limiting part 224 may also be perpendicular to or at an angle to the first direction.

[0161] It should be noted that although the first limiting part 224 is limited to a preset length along the Y-axis, this only indicates that the first limiting part 224 as a whole has an extending tendency in the Y-axis direction, and does not mean that the first limiting part 224 can only extend along the Y-axis direction. For example, the first limiting part 224 can extend at an angle relative to the Y-axis direction, but as a whole it still extends in the Y-axis direction, and it has an extension component along the Y-axis direction.

[0162] In the first embodiment, the first limiting part 224 provided on the pusher 226 in the first switch group 111 extends in the shape of a wall and is located between the moving contact 132 and the pushed part 133 of the common moving contact 137 along the X-axis direction. The pusher 226 is provided with the first limiting part 224 on both sides of the stationary contact 141 in both closing directions of the common moving contact 137.

[0163] In a preferred embodiment, when the moving contact 131 is in one of the disconnected positions separated from the stationary contact 141, at least a portion of the extended surface of the first limiting portion 224 (e.g., one side surface of the first limiting portion 224 along the X-axis) forms an angle with a reference plane defined by the Y-axis and Z-axis directions. That is, the extended surface of the wall-shaped first limiting portion 224 can be set to be tilted at a certain angle relative to the reference plane. Taking the first limiting portion 224 located above the moving contact 131 along the Z-axis as an example, the projection of the lower edge of the first limiting portion 224 in the direction perpendicular to the Z-axis is a straight line with a certain angle to the Y-axis direction.

[0164] Alternatively, when the moving contact 131 is in one of the disconnected positions separated from the stationary contact 141, at least a portion of the extension surface of the first limiting portion 224 is perpendicular to the X-axis direction. That is... Figure 7 The structure shown, taking the first limiting part 224 located above the moving contact 131 along the Z-axis as an example, at this time the projection of the lower edge of the first limiting part 224 in the direction perpendicular to the Z-axis is a straight line parallel to the Y-axis.

[0165] Furthermore, the pusher 226 of the first switch assembly 111 is also provided with a second limiting part 225, which is configured corresponding to the closing direction of the common moving contact 137. When the pusher 226 drives the common moving contact 137 to disconnect from the stationary contact 141 on either side, the second limiting part 225 blocks the movement of the common moving contact 137 along the closing direction toward the stationary contact 141 on that side, thereby ensuring that the common moving contact 137 disconnects from the stationary contact 141 on that side. In Embodiment 1, the first limiting part 224 of the common moving contact 137 corresponding to any closing direction is the same as the second limiting part 225 corresponding to the other closing direction.

[0166] Furthermore, referring to Figure 1 and Figure 3 The aforementioned pushing unit 220 is driven by the driving portion 300 to move the connected movable end 139 upward in a third direction. The driving portion 300 has at least two driving output ends 310 offset in a second direction; each driving output end 310 correspondingly drives each pushing unit 220 to move upward in a third direction. Furthermore, the driving portion 300 includes a motor and a transmission mechanism; the output end of the motor is connected to the transmission mechanism, and at least a portion of the transmission mechanism forms the driving output end 310.

[0167] The drive unit 300 uses a motor with a locking function; this motor can be a stepper motor or a DC motor with a built-in brake. When the motor drives the rotating member 210 to move the pushing member 226 to a predetermined closed or open position, even in a power-off state, the motor's own stepping holding torque or mechanical brake can prevent the rotating member 210 from rotating unexpectedly. The transmission mechanism has multiple meshing gears that receive the torque output by the motor and transmit it to the drive output end. The drive output end can be directly formed on the outermost gear of the transmission mechanism, or it can be an independent component fixedly connected to the outermost gear of the transmission mechanism. The two drive output ends 310 are offset in the second direction to correspond to the positions of the two pushing units 220 respectively. The two drive output ends and the rotating member can form an anti-rotation fit relative to the first axis and can be fixedly connected to each other in the Y-axis direction. For example, the drive output end 310 can be a countersunk hole with an anti-rotation fit shape formed on the transmission mechanism. The main shaft 211 of the rotating member 210 can be inserted into the countersunk hole and form an anti-rotation fit with the drive output end 310 relative to the first axis. The fixing of the rotating member 210 in the direction of the first axis can be achieved by conventional snap rings, etc.

[0168] In the above embodiments, since adjacent moving contacts 131 in the switch module are arranged along the first direction, and the movable ends 139 of adjacent moving contacts 131 face opposite directions along the second direction, the space occupied by the switch in the switch module is reduced, which is beneficial for the miniaturization of the relay and its application in confined environments. Specifically, the movable ends 139 of adjacent moving contacts 131 face opposite directions. That is, when two adjacent moving contacts 131 are arranged side by side along the first direction, the movable ends 139 of these two moving contacts 131 are not located at the same end in the second direction. Instead, one movable end 139 is located at one end of the second direction, and the other movable end 139 is located at the other end of the second direction. The advantage of this layout is that it fully considers the structural and motion characteristics of the moving contact 131. The movable end 139 of the moving contact 131 needs a larger space to move around it because it needs to be driven by the pushing component. At the same time, due to this staggered arrangement, the movable ends 139 of adjacent moving contacts 131 are opposite the non-moving end area of ​​the adjacent moving contact 131 along the first direction. The space of the non-moving end area is relatively large. Since there is no need to consider the avoidance problem between adjacent moving contacts 131 or the corresponding pushing components along the first direction, the adjacent moving contacts 131 can be arranged more closely side by side, thereby reducing the space occupied by multiple side-by-side switches in the first direction and achieving a more compact structural layout. Furthermore, the moving contact 131 and stationary contact 141 in this switch module utilize three dimensions of space to rationally allocate layout and movement space. The first direction is used to arrange the moving contact 131, allowing each moving contact 131 to obtain a larger current-carrying area without occupying too much space inside the relay. The second direction is used to allow the moving contact 131 to extend, ensuring that the wiring terminals 161 of the stationary contact 141 and the moving contact 131 in each switch have sufficient spatial distance, avoiding problems such as electrical insulation failure, local overheating, and accelerated aging of plastic parts. The third direction provides a large movement space for the moving contact 131, which can better meet the contact requirements of large contact gaps.

[0169] In at least one embodiment, the switch module has at least one first switch group 111 consisting of two switches, each switch including a moving contact 131 and a stationary contact 141; each switch in the first switch group 111 shares the moving contact 131 and the shared moving contact 131 forms a common moving contact 137, and the stationary contacts 141 of each switch are located on both sides of the common moving contact 137 along a third direction.

[0170] Since the first switch group 111 in the switch module forms at least two switches through the common moving contact 137, the number of independent moving contacts 131 required to achieve the double-throw function is directly reduced. This reduction in the number of moving contacts 131 not only simplifies the overall mechanical structure of the switch and reduces the mating relationships between components, thereby improving the integration and operational reliability of the mechanical system, but also, because the relay's drive section 300 or push section 200 only needs to control one common moving contact 137 to reciprocate in a third-order upward direction to selectively connect the two stationary contacts 141, compared to driving two independent moving contacts 131 along the same direction or other more complex motion trajectories, it significantly reduces the design complexity of the drive section 300 and its required installation space. In particular, it optimizes the space utilization efficiency in the direction of movement of the moving contacts 131, making the overall switch structure more compact. Simultaneously, through the cooperation of this second switch group 112 with other switches, more complex electrical path switching can be achieved, such as realizing a series-two-parallel function, broadening the application range of the relay.

[0171] In at least one embodiment, in the first switch group 111, the common moving contact 137 is adapted to be closed or both open with the stationary contacts 141 on both sides of its direction of action.

[0172] Because the first switch group 111 uses a common moving contact 137, three independent circuit states can be achieved through this common moving contact 137: either forming a closed circuit with one of the stationary contacts 141 located on either side of its operating path, or maintaining a predetermined electrical clearance with both stationary contacts 141 and being in an open state. In addition to the traditional state of switching the two stationary contacts 141 closed, the fully open state allows the relay to meet requirements such as safety isolation during circuit maintenance and independent and precise control of each battery cell during the pre-charging process of new energy vehicle batteries, significantly broadening the application range of this relay.

[0173] In at least one embodiment, the switch module has at least one second switch group 112 consisting of a single switch, wherein the moving contact 131 in the second switch group 112 is adjacent to the common moving contact 137 in the first switch group 111 along a first direction and the moving ends 139 of the two are oriented in opposite directions along a second direction, and the stationary contact 141 in the second switch group 112 is electrically connected to at least one stationary contact 141 in the first switch group 111.

[0174] Since the moving contact 131 in the second switch group 112 and the common moving contact 137 in the first switch group 111 are arranged adjacent to each other in the first direction and their moving ends 139 are oriented in opposite directions in the second direction, and the stationary contact 141 in the second switch group 112 is internally electrically connected to the stationary contact 141 of one of the switches in the first switch group 111, the integrated design of the internal electrical path and switch layout of the relay is realized. Without significantly increasing the overall mechanical complexity of the switch or the number of external wiring, more complex switch logic combinations can be realized. For example, specific forms of series circuits, parallel circuits or selective switching circuits can be flexibly constructed, providing the necessary hardware foundation for specific applications such as intelligent switching of battery pack series and parallel states.

[0175] In at least one embodiment, all moving contacts 131 are linked together so that the contact portion 100 has at least three contact states: the first contact state is when the common moving contact 137 and the common stationary contact 143 in the first switch group 111 are closed and the moving contact 131 and the common stationary contact 143 in the second switch group 112 are open; the second contact state is when the common moving contact 137 in the first switch group 111 is closed and the stationary contact 141 located on the other side of the common moving contact 137 relative to the common stationary contact 143 is closed and the moving contact 131 and the common stationary contact 143 in the second switch group 112 are closed; and the third contact state is when all switches in the first switch group 111 and the second switch group 112 are open.

[0176] Since the closed states of the common moving contact 137 and the different stationary contacts 141 in the first switch group 111 of the second switch group 112 correspond to the closed and open states of each switch in the second switch group 112, that is, when the common moving contact 137 is closed with one side of the stationary contact 141, it corresponds to the closed state of each switch in the second switch group 112, and when the common moving contact 137 is closed with the other side of the stationary contact 141, it corresponds to the open state of each switch in the second switch group 112, the selective switching between series and parallel circuits can be realized inside the relay through the correspondence between the switch states, providing the necessary hardware foundation for specific applications such as intelligent switching of series and parallel states of battery packs.

[0177] In at least one embodiment, in the switch module, in the first switch group 111 and the second switch group 112 adjacent to the moving contact 131, the two stationary contacts 141 that have an electrical connection relationship are integral structures and constitute a common stationary contact 143; the common stationary contact 143 has a stationary contact portion 144 corresponding to the two switches to which it belongs, and the stationary contact portion 144 is provided with a stationary contact 142 for cooperating with the moving contact 132 on the moving contact 131.

[0178] Since at least one switch in the first switch group 111 shares a common stationary contact 143 with the switches in the second switch group 112, and a single stationary contact 141 serves two independent switch circuits simultaneously, the total number of required parts is reduced and space utilization is improved. This makes the internal structure of the relay more compact, allowing for more complex circuit functions such as dual-circuit parallel or series connections without significantly increasing the overall size of the relay. Furthermore, the integrated common stationary contact 143 eliminates the additional assembly steps required to connect the two stationary contacts 141, while ensuring the relative positional accuracy between the two stationary contacts 142 and effectively improving the current-carrying capacity of the common stationary contact 143.

[0179] In at least one embodiment, the closing directions of the switches corresponding to the two stationary contacts 144 of the common stationary contact 143 are opposite.

[0180] Since the common stationary contact 143 is provided with stationary contact portions 144 with opposite closing directions for its two corresponding switches, it provides a basis for the series and parallel control of the first switch group 111 and the second switch group 112. This allows the common moving contact 137 and the moving contact 131 in the second switch group 112 to move in the same direction, so that one of them can be connected to the common stationary contact 143. The fact that the common moving contact 137 and the moving contact 131 in the second switch group 112 can move in the same direction helps to simplify the structural design of the required drive part 300 and further facilitates the miniaturization design of the relay.

[0181] In at least one embodiment, the two stationary contact portions 144 of the common stationary contact member 143 are a first contact portion 145 and a second contact portion 146, and the first contact portion 145 and the second contact portion 146 are connected by a connecting portion 147; the first contact portion 145, the connecting portion 147 and the second contact portion 146 are arranged sequentially along a first direction, and the first contact portion 145 and the second contact portion 146 are arranged in a staggered manner in a second direction, and the connecting portion 147 extends in the second direction; the second direction is perpendicular to the first direction.

[0182] Since the first contact portion 145 and the second contact portion 146 of the common stationary contact 143 are connected by the connecting portion 147, and the three have a specific relative positional relationship and extension direction, the space inside the relay in the first and second directions can be effectively utilized, which is beneficial to the miniaturization of the relay and the improvement of the utilization rate of the internal space of the relay.

[0183] In at least one embodiment, the first contact portion 145 and the second contact portion 146 are arranged offset in the third direction, and both are provided with stationary contact points 142 on opposite sides; the connecting portion 147 extends in the third direction.

[0184] By utilizing the third-party space to arrange the first contact 145, the connecting part 147, and the second contact 146, the conventional planar layout is transformed into a three-dimensional layout, which realizes the effective utilization of the internal space of the relay in the third-party direction. This is beneficial for achieving more complex functions without increasing the floor space and helps to miniaturize the overall structure of the relay.

[0185] In at least one embodiment, the first contact portion 145, the second contact portion 146, and the connecting portion 147 are all sheet-like structures; the first contact portion 145 and the second contact portion 146 are perpendicular to a third direction; and the connecting portion 147 is perpendicular to a first direction.

[0186] Because the first contact portion 145, the second contact portion 146, and the connecting portion 147 are designed as sheet-like structures, meaning the common stationary contact 143 is essentially a component with a relatively small thickness, this shape limitation can significantly reduce the space occupied by the common stationary contact 143 while ensuring a high current-carrying area. Furthermore, the extension directions of the first contact portion 145, the second contact portion 146, and the connecting portion 147 on the common stationary contact 143 are defined. The extension structure of the connecting portion 147 perpendicular to the first direction can fully utilize the space in the third direction, while the extension structures of the first contact portion 145 and the second contact portion 146 perpendicular to the third direction can ensure a good contact fit with the corresponding moving contact 131.

[0187] In at least one embodiment, a mounting base 150 is also included; the fixed ends 138 of each stationary contact 141 and each moving contact 131 are fixed to the mounting base 150; the mounting base 150 is provided with a partition wall 153; the partition wall 153 is located between adjacent first switch groups 111 and second switch groups 112 along a first direction.

[0188] The mounting base 150 improves the accuracy of the relative positions of the stationary contact 141 and the moving contact 131, thereby increasing their closing efficiency and accuracy. Furthermore, the partition wall 153 located between the first switch group 111 and the second switch group 112 on the mounting base 150 increases the creepage distance between the two switch groups, effectively preventing short-circuit risks caused by arcing or electrical breakdown. This also allows for a more compact arrangement of the first switch group 111 and the second switch group 112 along the first direction.

[0189] In at least one embodiment, the terminals 161 of each stationary contact 141 in the first switch group 111 and the second switch group 112 for external wiring are led out in the same direction to the mounting base 150 and exposed on the outer surface of the relay.

[0190] Since the terminals 161 of each stationary contact 141 in the first switch group 111 and the second switch group 112 are all led out in the same direction, it avoids the need to bend each stationary contact 141 in multiple directions, reducing copper loss. It also allows each stationary contact 141 to lead out the terminal 161 with a larger area. In the scheme with connection terminals, the connection strength and connection area with the connection terminals can be increased, especially the welding area during welding. This facilitates the electrical connection between the relay and the external circuit, reduces the design and manufacturing difficulty of the external circuit, and expands the application scenarios of the relay.

[0191] In at least one embodiment, another stationary contact 141 in the first switch group 111 opposite to the common stationary contact 143 is columnar. One end of the stationary contact 141 is exposed in the mounting base 150 along its extension direction and forms a terminal 161. The other end is exposed in the mounting base 150 and is provided with a stationary contact 142 for cooperating with the moving contact 132 on the moving contact 131.

[0192] By designing the stationary contact 141 as a columnar shape and exposing one end directly as the wiring terminal 161, the contact and wiring functions are integrated, reducing the number of parts and intermediate connection links, simplifying the structure, and lowering contact resistance and failure risks caused by additional welding or connections. The columnar structure of the stationary contact 141 itself also has high mechanical strength, providing strong resistance to impacts from the moving contact 131, ensuring its stability during injection molding and use.

[0193] In at least one embodiment, the second switch group 112 further includes a stationary contact 148 fixed to the mounting base 150. One end of the stationary contact 148 is connected to the second contact portion 146 of the common stationary contact 143, and the other end is exposed in the mounting base 150 to form a terminal 161.

[0194] Because of the presence of the stationary contact 148, the common stationary contact 143 does not require a structure for leading out the terminal 161. Therefore, the molding process of the common stationary contact 143 is simpler, and it is also easier to integrate it with the mounting base 150 by injection molding. Furthermore, by leading out the terminal 161 through the independent stationary contact 148, the electrical connection from the common moving contact 137 to the external wiring can be guaranteed to be stable and reliable.

[0195] In at least one embodiment, the stationary contact 141 and stationary contact 148 in the switch module are injection molded integrally with the mounting base 150, and the moving contact 131 is fixedly connected to the mounting base 150 by a connector 152 that is injection molded integrally with the mounting base 150.

[0196] Since both the stationary contact 141 and the stationary contact 148 are injection molded integrally with the mounting base 150, their relative positions are more accurate, ensuring a stable electrical connection between them and contributing to improved relay current-carrying performance. Simultaneously, the moving contact 131 is fixed to the mounting base 150 via a connector 152, which is injection molded integrally with it. The connector 152 can be pre-injected into the mounting base 150, and the moving contact 131 can be subsequently assembled onto the connector 152. The assembly of the contact part 100 is completed in step 2, which effectively improves the assembly complexity and reduces the time consumption. Furthermore, the connector 152 and the stationary contact 141 are injection molded as one piece with the mounting base 150, resulting in more accurate relative positions. After the moving contact 131 is assembled onto the connector 152, the relative positional relationship between the moving contact 131 and the stationary contact 141 is also more accurate, and the switch closing and opening states formed by the moving contact 131 and the stationary contact 141 are more stable, thus improving the fitting accuracy between the moving contact 131 and the stationary contact 141.

[0197] In at least one embodiment, in the switch module, the length directions of two adjacent movable contacts 131 along the first direction are parallel, and the length direction of the movable contact 131 is defined by the projection of the line connecting its fixed end 138 and movable end 139 onto a projection plane perpendicular to the third direction.

[0198] Since the length directions of two adjacent moving contacts 131 along the first direction are parallel, a relatively regular layout of the contact portion 100 is formed, which simplifies the design and manufacturing of the moving contacts 131 and their related fixing and guiding structures, and at the same time simplifies the pushing structure of the driving portion 300 or the pushing portion 200 on the moving contacts 131.

[0199] In at least one embodiment, at least one movable contact 131 is a flexible movable contact 131, which includes a fixed portion 134, an actuating portion 135, and a flexible connecting portion 136. The fixed portion 134 is fixed relative to the stationary contact 141 corresponding to the movable contact 131 and forms the fixed end 138 of the movable contact 131. The actuating portion 135 is adapted to swing relative to the fixed portion 134 of the movable contact 131 in a third direction and forms the movable end 139 of the movable contact 131. The flexible connecting portion 136 connects the fixed portion 134 and the actuating portion 135 and is adapted to bend.

[0200] Since the fixed portion 134 of the flexible moving contact 131 is fixed relative to each stationary contact 141, it is easier to lead out the connection terminal. At the same time, compared with the traditional spring structure, the flexible moving contact 131 can still ensure the flexible movement of the actuating part 135 when the current carrying capacity needs to be increased and the volume is increased, without increasing the reaction force of the moving contact 131, avoiding the need to increase the driving force of the driving part 300, thus providing a basis for saving the volume of the driving part 300 and reducing energy consumption. In addition, the flexible movement of the moving contact 131 also helps to reduce the resistance of the moving contact 131 and reduce the heat generation of the relay.

[0201] In at least one embodiment, the stationary contact 142 of the stationary contact 141 of the switch where the flexible moving contact 131 is located is tangentially positioned to face the swing trajectory of the actuating part 135.

[0202] In switches employing flexible moving contacts 131, the stationary contact 142 of the stationary contact 141 is tangentially positioned to face the swing trajectory of the actuating part 135. This ensures that the moving contact 132 and the stationary contact 142 can achieve ideal frontal contact during contact, which is beneficial for forming a larger and more uniform effective conductive area. This reduces contact resistance and temperature rise, maintains low and stable contact resistance, reduces arcing, improves the electrical performance and service life of the contact 132, and avoids malfunctions caused by poor contact.

[0203] In at least one embodiment, the common moving contact 137 is a flexible moving contact 131, and the two ends of the flexible connecting portion 136 of the common moving contact 137 are located at different positions along the third direction.

[0204] Since the common moving contact 137 is a flexible moving contact 131, the actuating part 135 of the common moving contact 137 can easily switch positions between the stationary contacts 141 on both sides. Since the two ends of the flexible connecting part 136 are located at different positions along the third direction, the position of the actuating part 135 relative to the fixed part 134 along the actuating direction can be raised by using the flexible connecting part 136 which is suitable for bending. This allows the common moving contact 137 to be placed on one of the stationary contacts 141 that is in the same position as the fixed part 134 along the third direction, and it is easier to place it between the stationary contacts 141 on both sides along its actuating direction.

[0205] In addition, this utility model also provides a relay, which includes a contact portion 100 as described in any of the preceding claims.

[0206] Since the relay includes the aforementioned contact portion 100 in its overall structure and is equipped with a push portion 200 and a drive portion 300 to coordinately control the on / off state of each switch in the contact portion 100, the relay has the advantages of compact structure and miniaturization.

[0207] In at least one embodiment, the relay further includes a push portion 200 connected to the moving contact 131 of each switch in the contact portion 100 to push each moving contact 131 to close or open with the corresponding stationary contact 141; and a drive portion 300, the output of which is connected to the push portion 200 for driving the push portion 200.

[0208] Since the relay's actuating part 200 includes at least two independent actuating units 220 that are staggered in the second direction, and each actuating unit 220 is connected to the movable end 139 of a moving contact 131 for driving, the actuating part 200 adapts to and matches the positional differences of the moving contact 131 in the contact part 100 in the second direction, avoiding uneven force transmission, deformation or interference problems that may be caused by using a single actuating member, thereby ensuring the accuracy and reliability of each switch action.

[0209] In at least one embodiment, the drive portion 300 has at least two drive outputs offset in a second direction; each drive output drives each push unit 220 to move in a third direction in a corresponding manner.

[0210] By introducing a drive unit 300 containing a motor, and linking the rotating member 210 and the push unit 220 with the rotating member 210 through specific first and second mating parts, the rotational motion of the motor is converted into the oscillating motion of the push unit 220. The motor output remains in the stopped position when rotation stops, giving the relay a self-locking capability. This means that after switching to a certain state (e.g., contact closed or open), it can maintain that state without continuously supplying power to the motor, ensuring that the push unit 220 can hold the moving contact 131 in a specific position and reducing energy consumption caused by maintaining the position. Compared to traditional linkage mechanisms, the sliding fit structure between the push unit 220 and the rotating member 210 has advantages such as smaller size, higher motion trajectory accuracy, lower impact force during pushing, and relatively lower requirements for component dimensional accuracy. Each of the two pushing parts 200 is provided with a rotating member 210. Compared with the case where the same rotating member 210 is used to push different pushing units 220 at the same time, the required extension of the rotating member 210 is shorter, the force transmission is more uniform, and it is not easy to deform. At the same time, the rotating member 210 can be directly supported by the drive output end without the need to set additional support strength to ensure the strength of the rotating member 210, which can further facilitate the miniaturization of the relay.

[0211] In at least one embodiment, the drive part 300 includes a motor and a transmission mechanism; the output end of the motor is connected to the transmission mechanism and at least a portion of the transmission mechanism forms a drive output end; the push part 200 further includes a rotating member 210; the rotating member 210 is connected to the drive output end to be driven to rotate about a first axis and is provided with a first mating part; the push unit 220 is provided with a second mating part that slides perpendicular to the first axis and is mated to the first mating part to move along a third direction driven by the rotating member 210.

[0212] By defining the specific structures of the first and second mating parts as a sliding groove 227 and a mating offset sliding pin 212, this pin-groove mating mechanism can precisely convert the rotational motion of the rotating member 210 into the reciprocating oscillation of the pushing unit 220. Therefore, the sliding trajectory is more accurate, the impact is less, the connection is more compact, the operation is more reliable, and it is less prone to mechanism jamming or reduced relay life due to scraping.

[0213] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A contact portion for use in a relay, characterized in that, It includes at least one switch module, which includes at least two moving contacts arranged along a first direction, and at least two stationary contacts corresponding to each moving contact; In the switch module, each of the moving contacts has a fixed end and a movable end distributed along a second direction. The fixed end is fixed relative to the stationary contact corresponding to the moving contact, and the movable end is adapted to move linearly or swing relative to the fixed end of the moving contact in a third direction to close or open with the corresponding stationary contact. Among them, the movable ends of at least two adjacent moving contacts in the first direction are oriented in opposite directions along the second direction. The second direction is perpendicular to the first direction or has an angle with each other, and the third direction is perpendicular to both the first and second directions.

2. The contact portion as described in claim 1, characterized in that, The switch module has at least one first switch group consisting of two switches. The switches include the moving contact and the stationary contact. In the first switch group, each switch shares a moving contact, and the shared moving contact forms a common moving contact. The stationary contacts of each switch are located on both sides of the common moving contact along a third direction.

3. A contact portion as described in claim 2, characterized in that, In the first switch group, the common moving contact is adapted to be closed or both open with the stationary contacts on both sides of its operating direction.

4. A contact portion as described in claim 2, characterized in that, The switch module includes at least one second switch group consisting of a single switch. The moving contact in the second switch group is adjacent to the common moving contact in the first switch group along a first direction, and their moving ends face opposite directions along the second direction. The stationary contact in the second switch group is electrically connected to at least one of the stationary contacts in the first switch group.

5. A contact portion as described in claim 4, characterized in that, All moving contacts are linked together so that the contact portion has at least three contact states: the first contact state is when the common moving contact and the common stationary contact in the first switch group are closed and the moving contact and the common stationary contact in the second switch group are open; the second contact state is when the common moving contact in the first switch group is closed and the stationary contact located on the other side of the common moving contact is closed and the moving contact and the common stationary contact in the second switch group are closed; and the third contact state is when all switches in the first switch group and the second switch group are open.

6. A contact portion as described in claim 4, characterized in that, In the switch module, in the first switch group and the second switch group adjacent to the moving contact, the two stationary contacts that are electrically connected are an integral structure and constitute a common stationary contact; the common stationary contact has a stationary contact portion corresponding to the two switches to which it belongs, and the stationary contact portion is provided with a stationary contact for cooperating with the moving contact on the moving contact.

7. A contact portion as described in claim 6, characterized in that, The two stationary contacts of the common stationary contact have opposite closing directions.

8. A contact portion as described in claim 6, characterized in that, The two static contact portions of the common static contact member are a first contact portion and a second contact portion, which are connected by a connecting portion. The first contact portion, the connecting portion, and the second contact portion are arranged sequentially along a first direction, and the first contact portion and the second contact portion are staggered in a second direction. The connecting portion extends in the second direction. The second direction is perpendicular to the first direction.

9. A contact portion as described in claim 8, characterized in that, The first contact portion and the second contact portion are staggered in the third direction, and the two have the stationary contact point on the side facing each other; the connecting portion extends in the third direction.

10. A contact portion as described in claim 9, characterized in that, The first contact portion, the second contact portion, and the connecting portion are all sheet-like structures; the first contact portion and the second contact portion are perpendicular to the third direction; the connecting portion is perpendicular to the first direction.

11. A contact portion as described in claim 4, characterized in that, It also includes a mounting base; the fixed ends of each of the stationary contacts and each of the moving contacts are fixed to the mounting base; the mounting base is provided with a partition wall; the partition wall is located between adjacent first switch groups and second switch groups along a first direction.

12. A contact portion as described in claim 11, characterized in that, The terminals of the stationary contacts in the first and second switch groups for external wiring are led out to the mounting base in the same direction and exposed on the outer surface of the relay.

13. A contact portion as described in claim 12, characterized in that, In the first switch group, the other stationary contact opposite to the common stationary contact is columnar. One end of the stationary contact extends out of the mounting base and forms the terminal, while the other end extends out of the mounting base and is provided with a stationary contact for engaging with the moving contact on the moving contact.

14. A contact portion as described in claim 12, characterized in that, The second switch assembly also includes a stationary contact fixed to the mounting base. One end of the stationary contact is connected to the second contact portion of the common stationary contact, and the other end protrudes from the mounting base to form the terminal.

15. A contact portion as described in claim 14, characterized in that, The stationary contact and stationary contact head in the switch module are integrally molded with the mounting base, and the moving contact is fixed to the mounting base through a connector integrally molded with the mounting base.

16. A contact portion as described in claim 1, characterized in that, In the switch module, the length directions of two adjacent movable contacts along the first direction are parallel, and the length direction of the movable contact is defined by the projection of the line connecting its fixed end and movable end onto a projection plane perpendicular to the third direction.

17. A contact portion as described in claim 2, characterized in that, At least one of the moving contacts is a flexible moving contact, the flexible moving contact including a fixed part, an actuating part and a flexible connecting part; the fixed part is fixed relative to the stationary contact corresponding to the moving contact and forms the fixed end of the moving contact, the actuating part is adapted to swing relative to the fixed part of the moving contact in a third direction and forms the movable end of the moving contact, and the flexible connecting part connects the fixed part and the actuating part and is adapted to bend.

18. A contact portion as described in claim 17, characterized in that, The stationary contact of the switch containing the flexible moving contact is tangentially positioned to face the swing trajectory of the actuating part.

19. A contact portion as described in claim 17, characterized in that, The common moving contact is a flexible moving contact, and the two ends of the flexible connecting part of the common moving contact are located at different positions along the third direction.

20. A relay, characterized in that, include: The contact portion as described in any one of claims 1 to 19.

21. The relay as claimed in claim 20, characterized in that it further... include: The actuating part is connected to the moving contact of each switch in the contact part to actuate each moving contact to close or open with the corresponding stationary contact; and The driving part has its output end connected to the pushing part for driving the pushing part.

22. A relay as described in claim 21, characterized in that, The pushing part includes at least two pushing units offset in a second direction; each pushing unit is connected to the movable end of each moving contact and is driven by the driving part to drive the connected movable end to move upward in a third direction.

23. A relay as described in claim 22, characterized in that, The driving section has at least two drive output ends that are offset in a second direction; each drive output end drives each of the pushing units to move upward in a third direction in a corresponding manner.

24. A relay as described in claim 23, characterized in that, The driving part includes a motor and a transmission mechanism; the output end of the motor is connected to the transmission mechanism and at least a portion of the transmission mechanism forms a driving output end; the pushing part also includes a rotating member; the rotating member is connected to the driving output end to be driven to rotate around a first axis and is provided with a first mating part; the pushing unit is provided with a second mating part that slides perpendicular to the first axis and is mated with the first mating part, so as to be driven by the rotating member to move in a third direction.

25. A relay as described in claim 24, characterized in that, One of the first mating part and the second mating part is a sliding groove extending perpendicular to the first axis, and the other is a sliding pin extending into the sliding groove along the first axis, wherein the sliding pin is offset relative to the first axis.

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